The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as

Related MCQs

• According to Kirchoff’s law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
• The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body).
• "The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium". This is __________ law.
• The relation between the emissive and absorptive power of a surface is developed under
• Which one gives the monochromatic emissive power for black body radiation?
• While the total emissivity of a perfect black body is unity, the same for a real body is
• The emissive power of a body depends upon its
• The emissive power of a body depends on
• If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of
• Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of