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JEE Main 2024 (6 Apr, Shift 1) · Kinetic Energy & Momentum

Kinetic Energy & Momentum question from JEE Main 2024 (6 Apr, Shift 1)

Q7JEE Main 2024 · 6 APR · SHIFT 1Easy

Kinetic Energy & Momentum

Four particles $A, B, C, D$ of mass $\frac{m}{2}, m, 2m, 4m$ , have same momentum, respectively. The particle with maximum kinetic energy is:

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Answer: (d)

Equal momentum: $K = \frac{p^2}{2m} \propto \frac{1}{m}$ .
A has the smallest mass $\frac{m}{2}$ , so it has the maximum KE. The answer is (d) A.

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