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#solids

3 public questions tagged with this topic.

Latent Heat and Phase Transitions

Why do gases expand more than solids for the same temperature increase?

Gases have a much higher coefficient of volume expansion than solids due to weaker intermolecular forces, allowing greater volume changes with temperature. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Gases have a higher expansion coefficient. This satisfies dimensional consistency and physical conditions given, so option D is scientifically correct.

Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.

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Stress, Strain and Hooke's Law

Which of the following best defines stress in the context of mechanical properties of solids?

Stress is defined as the restoring force per unit area developed in a body due to an external deforming force, given by Stress = FA. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Restoring force per unit area. This satisfies dimensional consistency and physical conditions given, so option A is scientifically correct.

Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.

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