A grey body is one whose absorptivity

Related MCQs

• 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the absorptivity of surface is
• According to Kirchoff's law, ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
• When heat is transferred from hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by
• Emissivity of a white polished body in comparison to a black body is
• When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by
• Heat flows from one body to other when they have
• A perfect black body is one which
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• All radiations in a black body are
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