A.Planck’s law
B.Kirchhoff’s law
C.Stefan Bolzmann’s law
D.Lambart’s 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 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 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 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.
- Pyrometer which react to all wavelengths of incident radiant energy are 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
- 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:
- The absorptivity of the black absorber plate coated with a common flat=black paint is typically
- 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
