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Q.

Consider the following statements.(A) The colour of a star is an indication of its size.(B) Rate of cooling is proportional to temperature difference between body and its 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.

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a

Both (A) and (B) are true.

b

(A) is true but (B) is false.

c

(A) is false but (B) is true.

d

Both (A) and (B) are false.

answer is D.

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Detailed Solution

RED GIANT stage is a special case of a star.when the temperature difference is not to high then only rate of cooling is propotional to temperature difference.
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