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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Analyzing +4 | -1
Assertion (A): Due to change in temperature if the length of a steel rod increases by 2%2 \% then its volume increases by 6%6 \%

Reason (R): The coefficient of volume expansion of a solid is nearly two times its coefficient of linear expansion
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Correct option: C
Assertion (A) is true, Reason (R) is false
Option C (Assertion (A) is true, Reason (R) is false) is correct because a 2% increase in length leads to a 6% increase in volume, but the coefficient of volume expansion is three times the linear expansion, not two.

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