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JEE · NEET Previous Year Question

$Two masses of 1 g and 9 g are moving with equal kinetic energies. The ratio of the magnitudes of their respective linear momenta is$

Topic: NEET PYQ

Answer: C. Full step-by-step solution below.

A $1 : 9$
B $9 : 1$
C $1 : 3$
D $3 : 1$

Correct answer: C

Solution

(c): \frac{K _{1}}{K _{2}} = \frac{p _{1}^{2}}{p _{2}^{2}} \times \frac{M _{2}^{2}}{M _{1}^{2}} when K_{1} = K_{2} \frac{p _{1}}{p _{2}} = \frac{M _{1}}{M _{2}} = \frac{1}{9} = \frac{1}{3} p_{1} : p_{2} = 1 : 3

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