Newton's law of cooling holds good provided the temperature difference between the body and the surroundings is

Large

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Small

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Very large

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Any value

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Solution

The correct option is B Small
This is because the rate of loss of heat due to convection is proportional to the temperature difference for small temperature differences only. Hence Newton's law of cooling is derived assuming that the temperature difference is small.

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The temperature range upto which Newton's law of cooling holds good

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