Question

Assertion (A) : When a proton and a neutron enter into a transverse magnetic field with equal speeds, then they trace circular paths of equal radii.
Reason (R) : In a transverse magnetic field, the period of revolution of a charged particle in a circular path is directly proportional to the mass of the particle.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are collect but (R) is not the collect explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not collect but (R) is correct

Answer 1

Answer: (D)

(A) When a proton and a neutron enter into a transverse magnetic field with equal speeds, then they trace circular paths of equal radii.
This statement is not correct because neutron will not move in a circular path as there is no charge on neutron.
So, $(A)$ is not correct but $(R)$ is correct.