AIIMS2010Physics-Magnetism
AIIMS 2010 Physics Motion of Charged Particles Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 12
Assertion: If a proton and an α-particle enter a uniform magnetic field perpendicularly with the same speed, the time period of revolution of α-particle is double that of proton. Reason: In a magnetic field, the period of revolution of a charged particle is directly proportional to the mass of the particle and is inversely proportional to charge of particle.
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C
Assertion is true but Reason is false.
D
Both Assertion and Reason are false.
Correct Answer
Option A
Detailed Explanation
The period of a charged particle in a magnetic field is given by T = 2πm/qB.
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