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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER
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Analyzing
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Assertion (A): A brass disc fits snugly in the hole of the iron plate. To remove the disc the combination must be heated.
Reason (R): The coefficient of linear expansion of brass is less than that of iron
Reason (R): The coefficient of linear expansion of brass is less than that of iron
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Correct option: D
If both (A) and (R) are false
Option D is correct. The assertion is false because brass expands more than iron upon heating. The reason is also false because the coefficient of linear expansion of brass is greater than that of iron.
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