NEET Physics Thermal Expansion MCQ Question
Which of the following statements about thermal expansion is correct?
All substances expand upon heating and contract upon cooling.
Gases do not experience thermal expansion like solids and liquids.
The coefficient of linear expansion is always constant for a given material.
Thermal expansion causes an increase in volume, area, and length of a substance.
Correct Answer
Detailed Explanation
Thermal expansion leads to an increase in dimensions (length, area, and volume) due to temperature changes, as stated in the NCERT context. While many substances do expand upon heating, the statements in options A, B, and C contain inaccuracies regarding the behavior of specific materials and conditions.
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