Kirchoff‟s law applies to _____________ radiation?

Related Mcqs:

1. The ratio of total radiating power to the absorptivity of the body depends upon the _____________ as per Kirchoff‟s law?

   A. Wavelength of radiation B. Nature of the body C. Temperature of the body D. None of these...

2. Kirchoff’s law is applicable to________________?

   A. Monochromatic radiation only B. Total radiation only C. Both A. and B. D. Only volumes and not to surfaces...

3. As per Kirchoff‟s law, the ratio of the total radiating power to the absorptivity of a body depends on the_______________?

   A. Temperature of the body only B. Wavelength of monochromatic radiation C. Both A. and B. D. Nature of material of body...

4. Stefan-Boltzmann law applies to _____________ body?

   A. Black B. White C. Grey D. Any colour...

5. Fourier’s law of heat conduction applies to _____________ surfaces?

   A. Isothermal B. Non-isothermal C. Both A. and B. D. Neither A. and B....

6. Stefan’s block body radiation law can also be derived from ______________ law?

   A. Kirchoff’s B. Planck’s C. Fourier’s D. None of these...

7. Fourier’s law applies to the heat transfer by__________________?

   A. Convection B. Radiation C. Conduction D. All A., B. & C....

8. Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) ?

   A. t4 B. T4 C. 1/t4 D. 1/T4...

9. The statement that “maximum wavelength of radiation is inversely proportional to the temperature” is ______________ law?

   A. Stefan-Boltzmann’s B. Planck’s C. Wien’s displacement D. None of these...

10. Radiation heat losses from satisfactorily insulated high pressure boiler may be about _____________ percent?

    A. 1 B. 7 C. 18 D. 26...