A particle A of mass m and initial velocity v collides with a particle of mass `m//2` which is at rest. The collision is head on, and elastic. The ratio of the de-broglie wavelength `lambda_(A) and lambda_(B)` after the collision is

A particle of mass m moving with velocity u collides elastically head on with a particle of mass 2m at rest. After collision the heavier particle moves with velocity?

A particle of mass m_1 moves with velocity v_1 and collides with another particle at rest of equal mass. The velocity of the second particle after the elastic collision is

A moving particle of mass m' makes head-on elastic collision with a particle of mass '2m' which is initially at rest.The fraction of K.E.lost by colliding particle is

A particle of mass m with an initial velocity u hati+2u hatj collides with a particle of mass 3m at rest. After collision, the two particles stick together and the combined particle moves with a velocity v hati+v' hatj . Which of the following is incorrect?

Particle A of mass m_1 moving with velocity (sqrt3hati+hatj)ms^(-1) collides with another particle Bof mass m_2 which is at rest initially. Let vec(V_1) and vec(V_2) be the velocities of particles A and B after collision respectively. If m_1 = 2m_2 and after collision vec(V_1) - (hati + sqrt3hatj)ms^(-1) , the angle between vec (V_1) and vec (V_2) is :

A moving particle of mass 'm' makes head-on elastic collision with a particle of mass '2m' which is initially at rest.The fraction of K.E.lost by colliding particle is