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Elaborate black body radiation..?

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Elaborate black body radiation..?

Posted by Mugunthan Mugunthan 3 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Abirami Kamalbabu 3 years, 10 months ago

A body which observes radiations of different frequencies uniformly is called black body. The radiation emitted by such a body is called black body radiation. Practically no perfect black body exist. But carbon black is nearly close to a black body.

Raunak Chauhan 3 years, 11 months ago

The body which can prefactly absorb and emit radiation is called a black body . In nature there is no existence of black body which can prefactly emit and absorb radiation. The radiation emitted by a black body is called black body radiation

Sruti Mohanty 3 years, 11 months ago

The emission radiated by a black body is called black body radiation. A body which can absorb all the radiations of variable wavelengths is called black body

Gaurav Seth 3 years, 11 months ago

Black body radiation: Black body is defined as perfect emitter and absorber of light.
For example, whenever we heat an Iron ball like objects, on heating they become first Red, then Orange, then Yellow and at very high temperature they become White.

According to the electromagnetic theory, the energy is emitted or absorbed continuously. So, the radiations emitted may vary in intensity, but should have same colour. The change in color shows, that wavelength also changes .This indicates non continuous flow of energy. So, it couldn’t be explained by electromagnetic theory. This phenomenon shows, that if we keep on heating the light that it emits. It will show changes in wavelength. That means the wavelength keeps on decreasing but after White there is no further change.

ANSWER

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