JEE Main 2022 · 27 Jun · Shift 1 · Physics Q38

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PhysicsSingle correct+4 / -1Question 38 of 90

What percentage of kinetic energy of a moving particle is transferred to a stationary particle when it strikes the stationary particle of 5 times its mass ?

(Assume the collision to be head-on elastic collision)

50.0%

66.6%

55.6%

33.3%

Answer and worked solution

Official answer: C

Elastic head-on. Fraction transferred $\dfrac{4m_1m_2}{(m_1+m_2)^2}=\dfrac{4\times5}{36}=55.6\%$ .

(C)

Topics:Elastic and inelastic collisions

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JEE Main 2022 · 27 Jun · Shift 1, Physics question 38