Assertion: The ion cannot move with a speed beyond a certain limit in a cyclotron.
Reason: As velocity increases time taken by ion increases.

Options

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.

Answer

C

Explanation

Time taken is independent of velocity and radius of path. However, maximum velocity will be given by `v_("max") = (qBR)/(m)` where R is radius of Dee.s