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NEET UG PHYSICS MCQ: THERMODYNAMICS

1 Easy
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Application +4 | -1
An iron ball of mass 0.2 kg0.2 \mathrm{~kg} is heated to 100∘C100^{\circ} \mathrm{C} and put into a block at ice at 0∘C 25 g0^{\circ} \mathrm{C} \,25 \mathrm{~g} of ice melts. If the latent heat of fusion of ice is 80 cal g−180 \mathrm{~cal} \mathrm{~g}^{-1}, then the specific heat of iron in cal g−1 ∘C\mathrm{cal} \mathrm{~g}^{-1} \,{}^\circ\mathrm{C} is
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Correct option: B
0.10.1
Option B (0.1) is correct because the specific heat of iron is calculated by equating the heat lost by the iron ball to the heat gained by the ice during melting.

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