While the total emissivity of a perfect black body is unity, the same for a real body is

Related MCQs

• The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit
• Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity?
• Total emissivity of polished silver compared to black body is
• Emissivity of a white polished body in comparison to a black body is
• A perfect black body is a perfect __________ of radiation.
• What is the emissivity of a black body?
• In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)
• When a body is in thermal equilibrium with its surroundings, the absorptivity and the emissivity of the body are same. This Law 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
• The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body).