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Assertion :Black body is an ideal body that emits and absorbs radiations of all frequencies. Reason: The frequency of radiation emitted by the body goes from a lower frequency to higher frequency with an increases in temperature.
Assertion :Black body is an ideal body that emits and absorbs radiations of all frequencies. Reason: The frequency of radiation emitted by the body goes from a lower frequency to higher frequency with an increases in temperature.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The ideal body, which emits and absorbs radiation of all frequencies, is called a black body and the radiation emitted by such is called black body radiation. The exact frequency distribution of the emitted radiation from a black body depends only on its temperature. At a given temperature, Intensity of radiation emitted increases with decreases of wavelength, reaches a maximum value at a given wavelength and then starts decreasing with further decrease of wavelength.
The ideal body, which emits and absorbs radiation of all frequencies, is called a black body and the radiation emitted by such is called black body radiation. The exact frequency distribution of the emitted radiation from a black body depends only on its temperature. At a given temperature, Intensity of radiation emitted increases with decreases of wavelength, reaches a maximum value at a given wavelength and then starts decreasing with further decrease of wavelength.
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