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Assertion : A body that is a good radiat...

Assertion : A body that is a good radiator is also a good absorber of radiation at a given wavelength.
Reason : According to Kirchhoff's law the absorptivity of a body is equal to its emissivity at a given wavelength

A

If both Assertion and Reason are correct and Reason is also a good absorber of radiation at a given wavelength.

B

If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false

D

If Assertion is false but Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
a) Good radiations are good absorbers.
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Knowledge Check

  • Assertion : Black body is an ideal body that emits and absorbs radiations of all frequencies. Reason : The frequency of radiation emitted by a body goes from a lower frequency to higher frequency with an increase in temperature.

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    B
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    B
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    C
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    D
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