Download App

Moving Charges and Magnetism — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
MCQ
Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below. Assertion (A): Magnetic field is useful in producing parallel beam of charged particle. Reason (R): Magnetic field inhibits the motion of charged particle moving across it.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is NOT the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false and R is also false.
✓

Answer

  1. Both A and R are true and R is the correct explanation of A.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Moving Charges and Magnetism→Moving Charges and Magnetism — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true

(a) Potential difference across the terminals of the battery is maximum when R = r

(b) Power delivered to the resistor is maximum when R = r

(c) Current in the circuit is maximum when R = r

(d) Current in the circuit is maximum when R >> r

→

What is the angle between the electric dipole moment and the electric field strength due to it on the equatorial line

(a) 0o

(b) 90o

(c) 180o   

(d) None of these
→
Superconductors have __________?
→
Matter waves are:
→

In the adjoining circuit diagram each resistance is of 10 W. The current in the arm AD will be

(a)     

(b) 

(c) 

(d)  
→
A hot liquid is kept in a big room. Its temperature is plotted as a function of time. Which of the following curves may represent the plot?

→

Energy stored in a coil of self inductance 40mH carrying a steady current of 2 A is

(a) 0.8 J   

(b) 8 J

(c) 0.08 J

(d) 80 J
→

A solid conducting sphere of radius R1 is surrounded by another concentric hollow conducting sphere of radius R2. The capacitance of this assembly is proportional to

(a)  

(b)

(c)

(d)

→
Statement-I : Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion and

Statement-II: For heavy nuclei, binding energy per nucleon increases with increasing Z. while for light nuclei it decreases with increasing Z.

→
Chossing the correct option complete the given nuclear fusion reaction that occurs in the sun :
\[{ }_2^3 H+{ }_2^3 H \rightarrow{ }_2^4 He+{ }_1^1 H+{ }_1^1 H+\] ___________ .
→