Questions
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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Correct option is D
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.Similar Questions
Consider the following statements.
(A) A body with large reflectivity is a poor emitter of heat radiations.
(B) A body with large reflectivity is a poor absorber of heat.
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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