The number of incorrect statement/s about the black body from the following is .

(A) Emit or absorb energy as EM radiation.
(B) Frequency distribution of the emitted radiation depends on temperature.

Question

The number of incorrect statement/s about the black body from the following is .

(A) Emit or absorb energy as EM 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.

Canvas Classes · Accepted Answer

Step 1 — Recall properties of black body radiation:
A black body is an idealised object that absorbs all incident electromagnetic radiation and emits radiation based solely on its temperature.

Step 2 — Evaluate each statement:

(A) "Emit or absorb energy as EM radiation" — This is the defining property of a black body. ✓ Correct

(B) "Frequency distribution depends on temperature" — Per Planck's radiation law, the spectral distribution  is entirely determined by temperature. ✓ Correct

(C) "Int

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