Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: when a rod lying freely is heated, no thermal stress is developed in itReason R : On heating, the length of the rod increasesIn the light of the above statements, choose the correct answer from the options given below:
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a
A is true but R is false
b
Both A and B are true but R is NOT the correct explanation of A
c
Both A and R are true and R is the correct explanation of A
d
A is false but R is true
answer is B.
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Detailed Solution
Stress is developed only if the expansion is hindered both A and R are true but Reason not the correct explanation of A