Assertion: Cyclotron does not accelerate.
Reason: Mass of the electron is very small.

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

A

Explanation

Cyclotron is suitable for accelerating heavy particles like protons, `alpha`-particles etc, and not for electrons because of low mass. Because electrons acquire very high velocities very near to velocity of light, appreciable variation in their mass occurs.