Assertion (A): The black body is an ideal body

Question:

Assertion (A): The black body is an ideal body that emits and absorbs radiations

of all frequencies.

Reason (R): The frequency of radiation emitted by a body goes from a lower

frequency to higher frequency with an increase in

temperature.

(i) Both A and R are true and R is the correct explanation of A.

(ii) Both A and R are true but R is not the explanation of A.

(iii) A is true and R is false.

(iv) Both A and R are false.

Solution:

Option (ii) Both A and R are true but R is not the explanation of A is the answer.

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