Question

Two particles of masses m₁, m₂ move with initial velocities
u₁ and u₂. On collision, one of the particles get excited to
higher level, after absorbing energy e. If final velocities of
particles be v₁ and v₂ then we must have [2015]
(a) 1/2m₁u₁²+1/2m₂u₂²=1/2m₁v₁²+1/2m₂v₂²-ℰ
(b) 1/2m₁u₁²+1/2m₂u₂²-ℰ=1/2m₁v₁²+1/2m₂v₂²
(c) 1/2m₁²u₁²+1/2m₂²u₂²+ℰ=1/2m₁²v₁²+1/2m₂²v₂²
(d) m₁²u₁+m₂²u₂-ℰ=m₁²v₁+m₂²v₂

Answer 1

Explanation:

Two particles of masses m₁, m₂ move with initial velocities

u₁ and u₂. On collision, one of the particles get excited to

higher level, after absorbing energy e. If final velocities of

particles be v₁ a