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

Related Mcqs:

1. 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...

2. 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...

3. Kirchoff‟s law applies to _____________ radiation?

   A. Total B. Monochromatic C. Both A. & B. D. Neither A. nor B....

4. A black body does not ____________ radiation?

   A. Absorb or emit B. Refract C. Reflect D. Both B. & C....

5. The absorptivity of a grey body at a given temperature _____________ with increasing wavelength of radiation?

   A. Increases B. Decreases C. Remain constant D. May increase or decrease; depends on the material...

6. A perfect black body is a perfect _____________ of radiation?

   A. Absorber B. Emitter C. Both A. & B. D. Neither A. nor B....

7. Which one gives the monochromatic emissive power for black body radiation ?

   A. Planck’s law B. Kirchhoff’s law C. Wien’s law D. Stefan-Boltzmann law...

8. The rate of emission of radiation by a body does not depend upon the__________________?

   A. Wavelength of radiation B. Surface temperature of the body C. Nature of the surface D. Shape and porosity of the body...

9. The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of ‘n’ is exactly 4 for__________________?

   A. Black painted bodies only B. All bodies C. Polished bodies only D. A black body...

10. A black body when hot, emits heat radiation of _____________ wavelengths?

    A. Small B. Large C. All D. One fixed...