NEET Physics Thermal Expansion MCQ Question
Which of the following statements about thermal expansion is correct?
Thermal expansion occurs when the temperature of a body increases, leading to an increase in its dimensions.
Only solids can undergo thermal expansion; liquids and gases do not expand with temperature changes.
The volume expansion of a substance is always greater than its linear expansion when the temperature increases.
Thermal expansion is only relevant for materials that are in a gaseous state.
Correct Answer
Detailed Explanation
Thermal expansion refers to the increase in dimensions due to temperature rise, as stated in the context. Gases, liquids, and solids all expand when heated, making option A the only correct statement.
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