NEET2018PhysicsWork, Power and EnergyActual
Kinetic energy of a particle is increased by 4 times. What will be the relation between initial and final momentum?
Options
- Ap₂=2 p₁
- Bp₂= p₁ 2
- Cp₂=p₁
- Dp₂=4 p₁
Correct answer
A. p₂=2 p₁
Step-by-step solution
Relation between kinetic energy and momentum is p ₁= 2 mk ₁ Kinetic energy is increased by 4 times k ₂=4 k ₁ Hence, p ₂= 2 mk ₂ = 2 ~m (4 k ₁ ) =2 2 mk ₁ or p ₂=2 p ₁