Discussion :: Heat and Mass Transfer
- A perfect black body is one which
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A.
Is black in colour |
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B.
Reflects all heat |
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C.
Transmits all heat radiations |
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D.
Absorbs heat radiations of all wave lengths falling on it |
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Answer : Option D
Explanation :
A perfect blackbody is one that absorbs all incoming light and does not reflect any. At room temperature, such an object would appear to be perfectly black . However, if heated to a high temperature, a blackbody will begin to glow with thermal radiation
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