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Question
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.
Options
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the explanation of A.
A is true and R is false.
Both A and R are false.
Solution
Both A and R are true but R is not the explanation of A.
Explanation:
The black body is the ideal body that absorbs and emits radiation of all frequencies. The radiation that it emits is said to be black body radiation.
With an increase of temperature the frequency of the black body radiation increases.
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