MCQ
The dimensions of electric field are:
- A[M L T-3 A-1].
- B[M L T-2 A-1].
- C[M L T-3 A-2].
- DNone.
✓
Answer
- [M L T-3 A-1].
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Assertion : An artificial satellite with a metal surface is moving above the earth in a circular orbit. A current will be induced in satellite if the plane of the orbit is inclined to the plane of the equator.
Reason : The current will be induced only when the speed of satellite is more than 8 km/sec.
|
(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. |
|
(d) If the assertion and reason both are false. |
A double convex thin lens made of glass (refractive index μ = 1.5) has both radii of curvature of magnitude 20 cm. Incident light rays parallel to the axis of the lens will converge at a distance L such that
|
(a) L = 20 cm |
(b) L = 10 cm |
(c) L = 40 cm |
(d) L = 20 / 3 cm |
When a ferromagnetic material goes through a hysteresis loop, the magnetic susceptibility:
Which of the following quantities are always zero in a simple harmonic motion?
→-
$\overrightarrow{\text{F}}\times\overrightarrow{\text{a}}$
-
$\overrightarrow{\text{v}}\times\overrightarrow{\text{r}}$
-
$\overrightarrow{\text{a}}\times\overrightarrow{\text{r}}$
-
$\overrightarrow{\text{F}}\times\overrightarrow{\text{r}}$
A passenger in an aeroplane shall:
A steady potential difference of 100V produces heat at a constant rate in a resistor. The alternating voltage which will produce half the heating effect in the same resister will be.
In Young's experiment, the distance between the slits is reduced to half and the distance between the slit and screen is doubled, then the fringe width
|
(a) Will not change |
(b) Will become half |
|
(c) Will be doubled |
(d) Will become four times |
Assertion : A compass needle when placed on the magnetic north pole of the earth rotates in vertical direction.
Reason : The earth has only horizontal component of its magnetic field at the north poles.
|
(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. |
|
(d) If the assertion and reason both are false. |
In the circuit shown in the figure, the potential difference across the 4.5mF capacitor is
|
(a) |
(b) 4 volts |
(c) 6 volts |
(d) 8 volts |
The equivalent capacitance between A and B is:
