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MHT CET 2024 (4 May, Shift 2) · Calorimetry, Latent Heat & Mechanical Equivalent of Heat

Calorimetry, Latent Heat & Mechanical Equivalent of Heat question from MHT CET 2024 (4 May, Shift 2)

Q17MHT CET 2024 · 4 MAY · SHIFT 2Medium

Calorimetry, Latent Heat & Mechanical Equivalent of Heat

A lead bullet moving with velocity ' $v$ ' strikes a wall and stops. If $50\%$ of its energy is converted into heat, then the increase in temperature is ( $s =$ specific heat of lead)

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Answer: (b)

$0.5 \times \tfrac{1}{2}mv^2 = J\,m\,s\,\Delta T$
$\Delta T = \dfrac{v^2}{4Js}$
So the answer is (b) $\dfrac{v^2}{4Js}$ .

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