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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Iron ball of mass 0.15 kg0.15 \mathrm{~kg} and specific heat capacity of 0.45 J/g∘C0.45 \mathrm{~J} / \mathrm{g}^{\circ} \mathrm{C} have same water equivalent of unknown material having mass 20 grams. Find specific heat capacity of this unknown material.
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Correct option: C
3.375 J/g∘C3.375 \mathrm{~J} / \mathrm{g}^{\circ} \mathrm{C}
Option C (3.375 J/g∘C3.375 \mathrm{~J} / \mathrm{g}^{\circ} \mathrm{C}) is correct because the water equivalent is the same, so the product of mass and specific heat capacity is equal for both materials.

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