Question

According to Newton’s law of cooling, the rate of cooling of a body is proportional to (Dq)n, where Dq is the difference of the temperature of the body and the surroundings, and n is equal to (a) two (b) three (c) four (d) one

Answer 1

Answer:

dt

dθ

∝(θ−θ

0

) or

dt

dθ

∝Δθ

We know that from newton's law of cooling Q=KA

dt

dθ

So, temperature gradient

dt

dθ

will having unity as power.

Therefore, n=1

Explanation:

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