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MHT CET202015 Oct 2020Morning ShiftPhysicsWork, Power and EnergyActual

Two masses of 1 gram and 4 gram are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is

Options

  1. A4: 1
  2. B2 : 1
  3. C1: 12
  4. D1: 16

Correct answer

C. 1: 12

Step-by-step solution

Kinetic energy K = p ² 2 ~m Two masses are given as- m ₁=1 gm and m ₂=4 gm But K ₁= K ₂ p ₁² 2 ~m ₁ = P ₂² 2 ~m ₂ Or P ₁² 2(1) = P ₂² 2(4) P ₁: P ₂=1: 2

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