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

Related MCQs

• 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 body is called grey if the monochromatic emissivity of the body is
• The rate of radiant energy, which is emitted by a surface at any temperature and in small wavelength is found from the known rate of energy, which under the same condition would be emitted from a black surface by multiplying with the absorptivity. Above enunciation is known as
• 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
• 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
• At all wavelengths and temperatures the monochromatic emissivity of a white body is equal to
• The value of the wavelength for maximum emissive power is given by —
• The value of the wavelength for maximum emissive power is given by
• Two large closely spaced concentric spheres (both of which are perfect black body radiators) are maintained at temperatures of 127?C and 27?C respectively. The space in between the two spheres is evacuated. Taking Stefan Boltzmann constant as 5.67 x 108 watt m2K the rate of radiation in watts per sq. m between the two spheres is approximately