An alpha particle collides elastically with a stationary nucleus and continues on at an angleof `60^(@)` with respect to the original direction of motion. The nucleus recoils at an angle of `30^(@)` with respect to this direction. Mass number of nucleus is

A particle of mass m collides with a stationary particle and continues to move at an angle of 45^(@) with respect to the original direction . The second particle also recoils at an angle of 45^(@) to this direction . The mass of the second particle is (collision is elastic )

A particle of mass m collides with a stationary particle and continues to move at an angle of 45^(@) with respect to the original direction. The second particle also recoils at an angle of 45^(@) to this direction. The mass of the second particle is (collision is elastic)

A ball of mass 1 kg moving along x-direction collides elastically with a stationary ball of mass m. The first ball (mass = 1 kg) recoils at right angle to its original direction of motion. If the second ball starts moving at an angle 30^(@) with the X-axis, then the value of m must be

If an alpha - particle collides head on with a nucleus, what is impact parameter?

A particle of mass m collides with a stationary particle of mass M and deviates by an angle of 60°. After collision mass M recoils at an angle 30° to the original direction of motion of m. If there is no loss in kinetic energy in the collision, the ratio of m/M is _________.