7. Given below are the two statements labelled Assertion(A) and the other labelled Reason(R). Select the correct answer to these questions. Assertion(A) : Heat energy is transferred from one body to another due to a temperature difference between them. Reason(R): Heating a substance causes a rise in temperature.
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a) both a and b
Explanation:
when the substance is heated it's kinetic energy increase so it diffusion takes place
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