NEET Physics Thermal Expansion MCQ Question
Which of the following statements about thermal expansion are correct?
Copper has a higher coefficient of linear expansion than glass.
The coefficient of volume expansion is constant for all substances.
The relationship α_v = 3α_l holds true for materials with uniform expansion.
Metals typically expand less than non-metals under the same temperature change.
Correct Answer
Detailed Explanation
Copper expands more than glass for the same temperature increase, as stated in the NCERT context. The coefficient of volume expansion is not constant and varies with temperature. The relation α_v = 3α_l is valid for isotropic materials, and metals generally expand more than non-metals.
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