JEE Main 2022 · 30 Jun · Shift 1 · Physics Q37

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PhysicsSingle correct+4 / -1Question 37 of 90

Two bodies A and B of masses 5 kg and 8 kg are moving such that the momentum of body B is twice that of the body A. The ratio of their kinetic energies will be :

4 : 5

2 : 5

5 : 4

5 : 2

Answer and worked solution

Official answer: B

$K=\frac{p^2}{2m}$ . $\frac{p^2/10}{4p^2/16}=\frac25$ .

(B)

Topics:Work-energy theorem Impulse and momentum

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JEE Main 2022 · 30 Jun · Shift 1, Physics question 37