Q.

Statement I : Coefficient of absorption of radiation of an ideal black body is 1.Statement II : An ideal black body emits radiation of all wavelength

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a

If both statement I and statement II are true and statement II is the correct explanation of statement I.

b

If both statement I and statement II are true but statement II is not the correct explanation of statement I.

c

If statement I is true but statement II is false

d

If both statement I and statement II are false

answer is B.

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Detailed Solution

We know that for ideal black body reflectance (r) = 0, transmittance (t) = 0, absorptance (a) = 1. It is clear that, when heated, the black body will radiate all the energy which is absorbed by it.
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