NEET Physics Thermal Expansion MCQ Question
Which of the following combinations about thermal expansion is correct?
Copper has a higher coefficient of linear expansion than glass, and volume expansion coefficient is three times the linear expansion coefficient.
Glass expands more than copper for the same temperature change, and coefficients of linear expansion are equal.
The coefficient of volume expansion is always constant for all materials, and metals generally have lower coefficients of thermal expansion.
Copper's coefficient of linear expansion is lower than that of aluminum, and the coefficient of linear expansion does not depend on temperature.
Correct Answer
Detailed Explanation
Copper expands about five times more than glass for the same rise in temperature, and the coefficient of volume expansion is related to the coefficient of linear expansion as αv = 3αl, making statement A correct.
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