jee_main_2025_04_april_evening - Thermal Properties of Matter Topics

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QUESTION #3 Thermal Expansion
Consider a rectangular sheet of solid material of length =9 cm and width d=4 cm. The coefficient of linear expansion is α=3.1×10⁻⁵ K⁻¹ at room temperature and one atmospheric pressure. The mass of sheet m=0.1 kg and the specific heat capacity Cv=900 J kg⁻¹K⁻¹. If the amount of heat supplied to the material is 8.1×10² J then change in area of the rectangular sheet is :-
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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