Question

03. Assertion (A): 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
Both A and Rare true and R is the correct explanation of A
i) Both A and R are true but Ris not the explanation of A
a) A is true and R is false.
(iv) Both A and R are false.​

Answer 1

Answer:

Assertion is true and reason is false

A body which absorbs and emits all radiations falling on it is called perfect black body. With rise in temperature, frequency increases.