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Physics M.C.Q (1 Marks)

Magnetic Effect of Current · CBSE STD 12 Science (CBSE - English Medium). 356 questions.

Questions · Page 1 of 8

M.C.Q (1 Marks)

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50 questions · timed · auto-graded

MCQ 11 Mark
Assertion : A direct current flows through a metallic rod, produced magnetic field only outside the rod.
Reason : There is no flow of charge carriers inside the rod.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If the assertion and reason both are false.
Answer
Correct option: D.
If the assertion and reason both are false.
If the assertion and reason both are false.
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MCQ 21 Mark
Assertion : A current I flows along the length of an infinitely long straight and thin walled pipe. Then the magnetic field at any point inside the pipe is zero.
Reason : $\oint \vec{B} \cdot d \vec{l}=\mu_0 I$
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
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MCQ 31 Mark
Assertion : If two long wires, hanging freely are connected to a battery in series, they come closer to each other.
Reason : Force of attraction acts between the two wires carrying current.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If the assertion and reason both are false.
Answer
Correct option: D.
If the assertion and reason both are false.
If the assertion and reason both are false.
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MCQ 41 Mark
Assertion : If a charged particle is moving on a circular path in a perpendicular magnetic field, the momentum of the particle is not changing,.
Reason : Velocity of the particle in not changing in the magnetic field.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If the assertion and reason both are false.
Answer
Correct option: D.
If the assertion and reason both are false.
 If the assertion and reason both are false.
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MCQ 51 Mark
Assertion : The magnetic filed at the ends of a very long current carrying solenoid is half of that at the center.
Reason : If the solenoid is sufficiently long, the field within it is uniform.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • ✓
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
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MCQ 61 Mark
Assertion : A loosely round helix made of stiff wire is suspended vertically with the lower end just touching a dish of mercury. When a current is passed through the wire, the helical wire executes oscillatory motion with the lower end jumping out of and inside of mercury.
Reason : When electric current is passed through helix, a magnetic field is produced both inside and outside the helix.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • ✓
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
 If both assertion and reason are true but reason is not the correct explanation of the assertion.
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MCQ 71 Mark
Assertion : Torque on the coil is the maximum, when coil is suspended in a radial magnetic field.
Reason : The torque tends to rotate the coil on its own axis.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • ✓
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
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MCQ 81 Mark
Assertion : An electron and proton enters a magnetic field with equal velocities, then, the force experienced by the proton will be more than electron.
Reason : The mass of proton is 1837 times more than electron.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If assertion is false but reason is true.
Answer
Correct option: D.
If assertion is false but reason is true.
(d) If assertion is false but reason is true.
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MCQ 91 Mark
A uniform conducting wire ABC has a mass of 10g. A current of 2A flows through it. The wire is kept in a uniform magnetic field B = 2T. The acceleration of the wire will be
  • A
    Zero
  • ✓
    $12  \mathrm{ms}^{-2}$ along y-axis
  • C
    $1.2 \times 10^{-3} \mathrm{~ms}^{-2}$ along $y$-axis
  • D
    $0.6 \times 10^{-3} \mathrm{~ms}^{-2}$ along y - axis
Answer
Correct option: B.
$12  \mathrm{ms}^{-2}$ along y-axis
(b) $12 \mathrm{ms}^{-2}$ along y-axis
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MCQ 101 Mark
Assertion : The energy of charged particle moving in a uniform magnetic field does not change.
Reason : Work done by magnetic field on the charge is zero.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
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MCQ 111 Mark
Assertion : A circular loop carrying current lies in XY plane with its center at origin having a magnetic flux in negative Z-axis.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • ✓
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: C.
If assertion is true but reason is false.
(c) If assertion is true but reason is false.
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MCQ 121 Mark
Assertion : The coil is bound over the metallic frame in moving coil galvanometer.
Reason : The metallic frame help in making steady deflection without any oscillation.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
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MCQ 131 Mark
Assertion : The ion cannot move with a speed beyond a certain limit in a cyclotron.
Reason : As velocity increases time taken by ion increases.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • ✓
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: C.
If assertion is true but reason is false.
(c) If assertion is true but reason is false.
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MCQ 141 Mark
Assertion : Cyclotron is a device which is used to accelerate the positive ion.
Reason : Cyclotron frequency depends upon the velocity.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • ✓
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: C.
If assertion is true but reason is false.
(c) If assertion is true but reason is false.
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MCQ 151 Mark
Assertion : Magnetic field interacts with a moving charge and not with a stationary charge.
Reason : A moving charge produces a magnetic field.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
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MCQ 161 Mark
Assertion : If an electron is not deflected while passing through a certain region of space, then only possibility is that there is no magnetic region.
Reason : Force is directly proportional to the magnetic field applied.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If assertion is false but reason is true.
Answer
Correct option: D.
If assertion is false but reason is true.
 If assertion is false but reason is true.
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MCQ 171 Mark
Assertion : Free electron always keep on moving in a conductor even then no magnetic force act on them in magnetic field unless a current is passed through it.
Reason : The average velocity of free electron is zero.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
Answer
Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
  If both assertion and reason are true and the reason is the correct explanation of the assertion.
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MCQ 181 Mark
If current flowing through shell of previous objective is equal to i, then energy density at a point distance 2R from axis of the shell varies according to the graph
  • A
  • ✓
  • C
  • D
Answer
Correct option: B.
(b)
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MCQ 191 Mark
If induction of magnetic field at a point is B and energy density is U then which of the following graphs is correct
  • ✓
  • B
  • C
  • D
Answer
Correct option: A.
(a)
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MCQ 211 Mark
A wire carrying a current i is placed in a uniform magnetic field in the form of the curve y = asin$\left(\frac{\pi x}{L}\right)$ 0 ≤ x ≤ 2L. The force acting on the wire is
  • A
    $\frac{i B I}{\pi}$
  • B
    $\mathrm{iBL}_\pi$
  • ✓
    2iBL
  • D
    Zero
Answer
Correct option: C.
2iBL
(c) 2iBL
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MCQ 221 Mark
A particle of charge q and mass m is moving along the x -axis with a velocity v and enters a region of electric field E and magnetic field B as shown in figure below for which figure the net force on the charge may be zero
  • A
  • ✓
  • C
  • D
Answer
Correct option: B.
(b)
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MCQ 231 Mark
The correct curve between the magnetic induction (B) along the axis of a long solenoid due to current flow i in it and distance x from one end is
  • ✓
  • B
  • C
  • D
Answer
Correct option: A.
(a)
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MCQ 241 Mark
A long thin hollow metallic cylinder of radius 'R' has a current i ampere. The magnetic induction 'B'-away from the axis at a distance r from the axis varies as shown in
  • ✓
  • B
  • C
  • D
Answer
Correct option: A.
(a)
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MCQ 251 Mark
Which of the following graphs shows the variation of magnetic induction B with distance r from a long wire carrying current
  • A
  • B
  • ✓
  • D
Answer
Correct option: C.
(c)
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MCQ 261 Mark
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field $\vec{B}=B_0 \vec{k}$ which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then
  • A
    v > u, y < 0
  • B
    v = u, y > 0
  • C
    v > u, y > 0
  • ✓
    v = u, y < 0
Answer
Correct option: D.
v = u, y < 0
(d) v = u, y < 0
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MCQ 271 Mark
Two long parallel wires are at a distance 2d apart. They carry steady equal currents flowing out of the plane of the paper, as shown. The variation of the magnetic field B along the line XX’ is given by 
  • A
  • ✓
  • C
  • D
Answer
Correct option: B.
(b)
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MCQ 281 Mark
The magnetic field due to a straight conductor of uniform cross section of radius a and carrying a steady current is represented by 
  • ✓
  • B
  • C
  • D
Answer
Correct option: A.
(a)
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MCQ 291 Mark
An electron is moving along the positive X-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative X-axis. This can be done by applying the magnetic field along
  • ✓
    Y-axis
  • B
    X-axis
  • C
    Y-axis only
  • D
    None of these
Answer
Correct option: A.
Y-axis
  Y-axis
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MCQ 301 Mark
AB and CD are long straight conductor, distance d apart, carrying a current I. The magnetic field at the midpoint of BC is
  • A
    $\frac{-\mu_0 \mathrm{I}}{2 \pi \mathrm{d}} \widehat{\mathrm{k}}$
  • ✓
    $\frac{-\mu_0 \mathrm{I}}{\pi \mathrm{d}} \widehat{\mathrm{k}}$
  • C
    $\frac{-\mu_0 \mathrm{I}}{4 \pi \mathrm{d}} \widehat{\mathrm{k}}$
  • D
    $\frac{-\mu_0 \mathrm{I}}{8 \pi \mathrm{d}} \widehat{\mathrm{k}}$
Answer
Correct option: B.
$\frac{-\mu_0 \mathrm{I}}{\pi \mathrm{d}} \widehat{\mathrm{k}}$
(b) $\frac{-\mu_0 \mathrm{I}}{\pi \mathrm{d}} \widehat{\mathrm{k}}$
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MCQ 311 Mark
A proton accelerated by a potential difference 500 KV moves though a transverse magnetic field of 0.51T as shown in figure. The angle θ through which the proton deviates from the initial direction of its motion is
  • A
    15°
  • ✓
    30°
  • C
    45°
  • D
    60°
Answer
Correct option: B.
30°
(b) 30°
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MCQ 321 Mark
In the given figure net magnetic field at O will be
  • A
    $\frac{2 \mu_0 \mathrm{i}}{3 \pi \mathrm{a}} \sqrt{4-\pi^2}$
  • ✓
    $\frac{\mu_0 \mathrm{i}}{3 \pi \mathrm{a}} \sqrt{4+\pi^2}$
  • C
    $\frac{2 \mu_0 \mathrm{i}}{3 \pi a^2} \sqrt{4+\pi^2}$
  • D
    $\frac{2 \mu_0 \mathrm{i}}{3 \pi \mathrm{a}} \sqrt{4-\pi^2}$
Answer
Correct option: B.
$\frac{\mu_0 \mathrm{i}}{3 \pi \mathrm{a}} \sqrt{4+\pi^2}$
(b) $\frac{\mu_0 \mathrm{i}}{3 \pi \mathrm{a}} \sqrt{4+\pi^2}$
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MCQ 331 Mark
A horizontal rod of mass 10 gm and length 10 cm is placed on a smooth plane inclined at an angle of 60° with the horizontal, with the length of the rod parallel to the edge of the inclined plane. A uniform magnetic field of induction B is applied vertically downwards. If the current through the rod is 1.73 ampere, then the value of B for which the rod remains stationary on the inclined plane is
  • A
    1.73 Tesla
  • B
    $\frac{1}{1.73}$ Tesla
  • ✓
    1 Tesla
  • D
    None of the above
Answer
Correct option: C.
1 Tesla
(c) 1 Tesla
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MCQ 341 Mark
A particle of mass m and charge q moves with a constant velocity v along the positive x direction. It enters a region containing a uniform magnetic field B directed along the negative z direction, extending from x = a to x = b. The minimum value of v required so that the particle can just enter the region x > b is
  • A
    qb B/m
  • ✓
    q(b – a) B/m
  • C
    qaB/m
  • D
    q(b + a)B/2m
Answer
Correct option: B.
q(b – a) B/m
 q(b – a) B/m
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MCQ 351 Mark
Same current i = 2A is flowing in a wire frame as shown in figure. The frame is a combination of two equilateral triangles ACD and CDE of side 1m. It is placed in uniform magnetic field B = 4T acting perpendicular to the plane of frame. The magnitude of magnetic force acting on the frame is
  • ✓
    24 N
  • B
    Zero
  • C
    16 N
  • D
    8 N
Answer
Correct option: A.
24 N
(a) 24 N
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MCQ 361 Mark
A particle with charge q, moving with a momentum p, enters a uniform magnetic field normally. The magnetic field has magnitude B and is confined to a region of width d, where d < $\frac{p}{Bq}$ , The particle is deflected by an angle θ in crossing the field
  • ✓
    sinθ = $\frac{Bqd}{p}$
  • B
    sinθ = $\frac{p}{Bqd}$
  • C
    sinθ = $\frac{bp}{qd}$
  • D
    sinθ = $\frac{pd}{Bq}$
Answer
Correct option: A.
sinθ = $\frac{Bqd}{p}$
(a) sinθ = $\frac{Bqd}{p}$
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MCQ 371 Mark
Two thick wires and two thin wires, all of the same materials and same length form a square in the three different ways P, Q and R as shown in fig with current connection shown, the magnetic field at the centre of the square is zero in cases
  • A
    In P only
  • B
    In P and Q only
  • C
    In Q and R only
  • ✓
    P and R only
Answer
Correct option: D.
P and R only
(d) P and R only
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MCQ 381 Mark
A steady current i flows in a small square loop of wire of side L in a horizontal plane. The loop is now folded about its middle such that half of it lies in a vertical plane. Let $\overrightarrow{\mu_1}$ and $\overrightarrow{\mu_2}$ respectively denote the magnetic moments due to the current loop before and after folding. Then
  • A
    $\overrightarrow{\mu_2}=0$
  • B
    $\overrightarrow{\mu_1}$ and $\overrightarrow{\mu_2}$ are in the same direction
  • ✓
    $\frac{\left|\overrightarrow{\mu_1}\right|}{\left|\mu_2\right|}=\sqrt{2}$
     
  • D
    $\frac{\left|\mu_2\right|}{\left|\mu_2\right|}=\left(\frac{1}{\sqrt{2}}\right)$
Answer
Correct option: C.
$\frac{\left|\overrightarrow{\mu_1}\right|}{\left|\mu_2\right|}=\sqrt{2}$
 
(c) $\frac{\left|\overrightarrow{\mu_1}\right|}{\left|\mu_2\right|}=\sqrt{2}$
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MCQ 391 Mark
A long wire AB is placed on a table. Another wire PQ of mass 1.0 g and length 50 cm is set to slide on two rails PS and QR. A current of 50A is passed through the wires. At what distance above AB, will the wire PQ be in equilibrium
  • ✓
    25 mm
  • B
    50 mm
  • C
    75 mm
  • D
    100 mm
Answer
Correct option: A.
25 mm
(a) 25 mm
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MCQ 401 Mark
Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius 'R' and outer radius '2R', cylinder carrying uniformly distributed current along it's axis. The magnetic induction at point 'P' at a distance $\frac{3R}{2}$ from the axis of the cylinder will be
  • A
    Zero
  • B
    $\frac{5 \mu_0 \mathrm{i}}{72 \pi R}$
  • C
    $\frac{7 \mu_0 \mathrm{i}}{18 \pi R}$
  • ✓
    $\frac{5 \mu_0 \mathrm{i}}{36\pi R}$
Answer
Correct option: D.
$\frac{5 \mu_0 \mathrm{i}}{36\pi R}$
(d) $\frac{5 \mu_0 \mathrm{i}}{36\pi R}$
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MCQ 411 Mark
Two infinite length wires carries currents 8A and 6A respectively and placed along X and Y-axis. Magnetic field at a point P(0, 0, d)m will be
  • A
    $\frac{7\mu_0}{\pi d}$
  • B
    $\frac{10\mu_0}{\pi d}$
  • C
    $\frac{14\mu_0}{\pi d}$
  • ✓
    $\frac{5\mu_0}{\pi d}$
Answer
Correct option: D.
$\frac{5\mu_0}{\pi d}$
(d) $\frac{5\mu_0}{\pi d}$
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MCQ 421 Mark
The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a square coil made from the same length of wire will be
  • A
    $\frac{\pi^2}{4 \sqrt{2}}$
  • ✓
    $\frac{\pi^2}{8 \sqrt{2}}$
  • C
    $\frac{\pi}{2 \sqrt{2}}$
  • D
    $\frac{\pi}{4 \sqrt{2}}$
Answer
Correct option: B.
$\frac{\pi^2}{8 \sqrt{2}}$
(b) $\frac{\pi^2}{8 \sqrt{2}}$
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MCQ 431 Mark
What will be the resultant magnetic field at origin due to four infinite length wires. If each wire produces magnetic field 'B' at origin

  • A
    4 B
  • B
    $\sqrt {2}B$
  • ✓
    $2\sqrt {2}B$
  • D
    Zero
Answer
Correct option: C.
$2\sqrt {2}B$
(c) $2\sqrt {2}B$
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MCQ 441 Mark
A ring of radius R, made of an insulating material carries a charge Q uniformly distributed on it. If the ring rotates about the axis passing through its centre and normal to plane of the ring with constant angular speed ω, then the magnitude of the magnetic moment of the ring is
  • A
    $QωR^2$
  • ✓
    $\frac{1}{2}QωR^2$
  • C
    $Q\omega^2R$
  • D
    $\frac{1}{2}Q\omega^2R$
Answer
Correct option: B.
$\frac{1}{2}QωR^2$
(b) $\frac{1}{2}QωR^2$
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MCQ 451 Mark
Two particles each of mass m and charge q are attached to the two ends of a light rigid rod of length 2R. The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is
  • ✓
    $\frac{q}{2m}$
  • B
    $\frac{q}{m}$
  • C
    $\frac{2q}{m}$
  • D
    $\frac{q}{\pi m}$
Answer
Correct option: A.
$\frac{q}{2m}$
(a) $\frac{q}{2m}$
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MCQ 461 Mark
Two insulated rings, one of slightly smaller diameter than the other are suspended along their common diameter as shown. Initially the planes of the rings are mutually perpendicular. When a steady current is set up in each of them
  • ✓
    The two rings rotate into a common plane
  • B
    The inner ring oscillates about its initial position
  • C
    The inner ring stays stationary while the outer one moves into the plane of the inner ring
  • D
    The outer ring stays stationary while the inner one moves into the plane of the outer ring
Answer
Correct option: A.
The two rings rotate into a common plane
(a) The two rings rotate into a common plane
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MCQ 471 Mark
A metallic block carrying current I is subjected to a uniform magnetic induction $\vec B$ as shown in the figure. The moving charges experience a force $\vec F$ given by ........... which results in the lowering of the potential of the face ........ Assume the speed of the carriers to be v

  • ✓
    eVB$\hat{k}$, ABCD
  • B
    eVB$\hat{k}$, EFGH
  • C
    -eVB$\hat{k}$, ABCD
  • D
    -eVB$\hat{k}$, EFGH
Answer
Correct option: A.
eVB$\hat{k}$, ABCD
(a) eVB$\hat{k}$, ABCD
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MCQ 481 Mark
A current carrying loop is placed in a uniform magnetic field in four different orientations, I,II, III & IV arrange them in the decreasing order of potential Energy
(a)(b) (c) (d)
  • A
    I > III > II > IV
  • B
    I > II >III > IV
  • ✓
    I > IV > II > III
  • D
    III > IV > I > II
Answer
Correct option: C.
I > IV > II > III
(c) I > IV > II > III
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MCQ 491 Mark
A conducting loop carrying a current I is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to
  • A
    Contract
  • ✓
    Expand
  • C
    Move towards +ve x –axis
  • D
    Move towards –ve x-axis
Answer
Correct option: B.
Expand
(b) Expand
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MCQ 501 Mark
Two very thin metallic wires placed along X and Y-axis carry equal currents as shown here. AB and CD are lines at 45° with the axes with origin of axes at O. The magnetic field will be zero on the line
  • ✓
    AB
  • B
    CD
  • C
    Segment OB only of line AB
  • D
    Segment OC only of line CD
Answer
Correct option: A.
AB
(a) AB
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M.C.Q (1 Marks) - Physics STD 12 Science Questions - Vidyadip