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Question
The temperature-time graph obtained when a hot liquid is allowed to cool, is likely to resemble
The temperature-time graph obtained when a hot liquid is allowed to cool, is likely to resemble
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Solution
The correct option is B B
The graph B is in accordance with the Sir Newton's law of cooling , therefore it is correct . Sir Newton's law of cooling states that the rate of cooling (heat loss) of a liquid is directly proportional to the difference in temperatures of the body (T) and surrounding (To) i.e. E∝(T−To) ,it means , liquid cools faster initially because initially the temperature difference of liquid and surrounding is large , with increase in time the difference of temperatures decreases hence the rate of cooling also decreases . This result is obtained from the graph B , so B is correct .
The graph B is in accordance with the Sir Newton's law of cooling , therefore it is correct .
Sir Newton's law of cooling states that the rate of cooling (heat loss) of a liquid is directly proportional to the difference in temperatures of the body (T) and surrounding (To) i.e.
E∝(T−To) ,
it means , liquid cools faster initially because initially the temperature difference of liquid and surrounding is large , with increase in time the difference of temperatures decreases hence the rate of cooling also decreases . This result is obtained from the graph B , so B is correct .
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