A.Planck’s law
B.Kirchhoff’s law
C.Stefan Boltzman law
D.Lambert rule
E.None of the above
Related Mcqs:
- The rate of radiant energy, which is emitted by a surface at any temperature and in small wavelengths is found from the known rate of energy, which under the same conditions would be emitted from a black surface, by multiplying with the absorptivity. Above enunciation 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
- 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
- The wavelength for maximum emissive power is given by
- The total radiant energy emitted by a plane surface per unit area and unit time is called
- If the earth’s average surface temperature were to increase, the amount of radiation emitted from the earth’s surface would _________, and the wavelength of peak emission would shift toward _________ wavelengths.
- The value of the wavelength for maximum emissive power is given by
- Two parallel opposed, infinite black planes are maintained at 300?C and 400?C respectively. If the temperature difference is doubled by increasing the temperature from 400?C to 500?C, the heat exchange rate will increase by a factor of about
- How much radiant energy will an object emit if its temperature is at absolute zero ?
- The largest amont of reflection of the solar radiant energy which is reflected back into space before reaching the earth’s surface is due to:
