Assertion : A bullet is fired from a rifle. If the rifle recoils freely, the kinetic energy of rifle is more than that of the bullet.
Reason : In the case of rifle bullet system the law of conservation of momentum violates.

Options

A. Less than that of the bullet
B. More than that of the bullet
C. Same as that of the bullet
D. Equal or less than that of the bullet

Answer

A

Explanation

`E=(P^(2))/(2m)`. If P = constant then `E prop (1)/(m)`
i.e. kinetic energy of heavier body will be less. As the mass of gun is more than bullet therefore it possess less kinetic energy.