NEET Physics Thermal Expansion Assertion Reason Question
Assertion (A): If a rod is prevented from expanding by fixing its ends rigidly, it experiences a compressive strain. | Reason (R): The coefficient of linear expansion is directly proportional to the change in temperature.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
The assertion is true as a rod prevented from expanding will experience compressive strain due to external forces. However, the reason provided is false because the coefficient of linear expansion is a material property and not directly proportional to the change in temperature.
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