In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)

Related MCQs

• 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
• Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity?
• 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
• Emissivity and absorptivity of a surface are equal for radiation
• The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit
• Absorptivity of a body will be equal to its emissivity
• The absorptivity of a body is equal to its emissivity
• The emissivity of a body will be equal to absorptivity when
• Emissivity of a white polished body in comparison to a black body is
• While the total emissivity of a perfect black body is unity, the same for a real body is