A. Stefan’s
B. Dalton’s
C. Wien’s
D. Kirchoff’s
Related Mcqs:
- 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 - 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 - The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?
A. αT
B. α × 1/T
C. α T4
D. Independent of T - For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?
A. Δt
B. Δt2
C. Δt3
D. √(Δt) - 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 - The energy radiated from a surface Q at absolute temperature T is related as__________________?
A. Q ∝ T2
B. Q ∝ T4
C. Q ∝ T3
D. None of these - If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?
A. Parabolic
B. Hyperbolic
C. Linear
D. Logarithmic - If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows ____________ law?
A. Hyperbolic
B. Parabolic
C. Linear
D. Logarithmic - 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 - Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) ?
A. √d
B. d
C. d2
D. d1.5
