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Statements about black-body radiation

This type of question, asked 2 times: 24 Jan 2023, 10 Apr 2023. All 2 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    24 Jan 2023

    141
    Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is A. T4>T3>T2>T1T_{4}>T_{3}>T_{2}>T_{1} B. The black body consists of particles performing simple harmonic motion. C. The peak of the spectrum shifts to shorter wavelength as temperature increases. D. T1v1=T2v2=T3v3≠\frac{T_{1}}{v_{1}}=\frac{T_{2}}{v_{2}}=\frac{T_{3}}{v_{3}}\neq constant E. The given spectrum could be explained using quantisation of energy.

  2. Question 2

    10 Apr 2023

    54
    The number of incorrect statement/s about the black body from the following is (A) Emit or absorb energy in the form of electromagnetic radiation (B) Frequency distribution of the emitted radiation depends on temperature (C) At a given temperature, intensity vs frequency curve passes through a maximum value (D) The maximum of the intensity vs frequency curve is at a higher frequency at higher temperature compared to that at lower temperature