Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is _________. [2023]

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Solution

Q.
Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is _________. [2023]

A.   $T_{4} > T_{3} > T_{2} > T_{1}$

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.   $\frac{T_{1}}{ν_{1}} = \frac{T_{2}}{ν_{2}} = \frac{T_{3}}{ν_{3}} \neq constant$

E.  The given spectrum could be explained using quantisation of energy.

Ans.
(2)

(A)

Wavelength of radiation emitted by black body decreases with increase in temperature.

(C) The peak of spectrum shifts to shorter wavelength as temperature increases.

(E) Given spectrum could be explained by quantization.

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