Relation between intensity of radiation & thickness of layer in gases - Heat Transfer

Q.  What is the relation between the intensity of radiation and the thickness of the layer, in case of gas?
- Published on 12 Aug 15

a. the intensity of radiation increases with increase in the thickness of gas layer
b. the intensity of radiation decreases with increase in the thickness of gas layer
c. the intensity of radiation remains unaffected with change in the thickness of gas layer
d. unpredictable

ANSWER: the intensity of radiation decreases with increase in the thickness of gas layer

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