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MHT CET 2026 (15 May, Shift 2) · Thermometry & Thermal Expansion

Thermometry & Thermal Expansion question from MHT CET 2026 (15 May, Shift 2)

Q10MHT CET 2026 · 15 MAY · SHIFT 2Medium

Thermometry & Thermal Expansion

A sheet of solid material having area $A$ and coefficient of linear expansion $\alpha$ . The mass of sheet is $m$ and specific heat capacity is $s$ . If $dQ$ is the amount of heat given to the sheet then change in its area is

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Answer: (b)

Heat raises temperature by $\Delta T = \dfrac{\Delta Q}{ms}$ .
Areal expansion: $\Delta A = A(2\alpha)\Delta T$ .
$\Delta A = \dfrac{A(2\alpha)\Delta Q}{ms}$ , so the answer is (b).

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