Question

…………… determines the direction of flow of heat.
(a) Heat
(b) Temperature
(c) Coldness
(d) None of these

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Answer

(b) Temperature

Reason — Temperature is a quantity which indicates the thermal state of a body (i.e., the degree of hotness or coolness of the body). It determines the direction of flow of heat when two bodies at different temperatures are placed in contact.

The S.I. unit of temperature is Kelvin (K).

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