A body is called grey if the monochromatic emissivity of the body is

Related MCQs

• At all wavelengths and temperatures the monochromatic emissivity of a white body is equal to
• The statement that the emissivity and absorptivity of a surface is surrounded by its own temperature are the same for both monochromatic and total radiation, is known as
• A grey body has emissivity
• The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body).
• Which one gives the monochromatic emissive power for black body radiation?
• A relationship between the temperature of a black body and the wavelength at which the maximum value of monochromatic emission power occurs, is established under
• Emissivity of a white polished body in comparison to a black body is
• 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 emissivity of surface is
• While the total emissivity of a perfect black body is unity, the same for a real body is
• Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be