A. Monochromatic radiation only
B. Total radiation only
C. Both A. and B.
D. Only volumes and not to surfaces
Related Mcqs:
- 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 - Colburn analogy is applicable for the value of Prandtl number from_________________?
A. 0.001 to 1
B. 0.6 to 120
C. 0.5 to 5
D. 120 to 400 - Analogy between mass and heat transfer is not applicable in case of____________________?
A. Same velocity profile or equal eddy diffusivities
B. Thermal or pressure mass diffusion
C. Viscous heating or chemical reaction
D. Both B. and C. - One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to________________?
A. Heat the water from 0°C to 100°C
B. Evaporate the water
C. To superheat the steam
D. Data insufficient, can’t be predicted - “The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium”. This is ______________ law?
A. Kirchoff’s
B. Planck’s
C. Wien’s displacement
D. Stefan-Boltzmann - 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 - Fourier’s law of heat conduction applies to _____________ surfaces?
A. Isothermal
B. Non-isothermal
C. Both A. and B.
D. Neither A. and B. - Fourier’s law applies to the heat transfer by__________________?
A. Convection
B. Radiation
C. Conduction
D. All A., B. & C. - 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 - Kirchoff‟s law applies to _____________ radiation?
A. Total
B. Monochromatic
C. Both A. & B.
D. Neither A. nor B.
