Consider the following statements.(A) A hot body is kept in some surrounding. As it cools, its temperature falls from $$80$$°C to $$78$$°C in a time duration $$t1$$ and from $$50$$°C to $$48$$°C in time duration $$t2$$. The temperature of surrounding is constantly $$20$$°C, then $$t1$$ $$t2$$.(B) According to Newton's law of cooling; rate of cooling depends only on the difference of temperatures of the body and the surrounding.Select the correct option.(a) (A) is false but (B) is true.(b) Both (A) and (B) are true.(c) (A) is true but (B) is false.(d) Both (A) and (B) are false.

Question

Consider the following statements.(A) A hot body is kept in some surrounding. As it cools, its temperature falls from $$80$$°C to $$78$$°C in a time duration $$t1$$ and from $$50$$°C to $$48$$°C in time duration $$t2$$. The temperature of surrounding is constantly $$20$$°C, then $$t1$$ > $$t2$$.(B) According to Newton's law of cooling; rate of cooling depends only on the difference of temperatures of the body and the surrounding.Select the correct option.(a) (A) is false but (B) is true.(b) Both (A) and (B) are true.(c) (A) is true but (B) is false.(d) Both (A) and (B) are false.

Infinity Learn · Accepted Answer

Both A  and B are false.

Detailed Solution

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