JEE · NEET Previous Year Question
Which of the following statement is correct
Topic: NEET PYQ
Answer: D. Full step-by-step solution below.
- AA good absorber is a bad emitter
- BEvery body absorbs and emits radiations at every temperature
- CThe energy of radiations emitted from a black body is same for all wavelengths
- DThe law showing the relation of temperatures with the wavelength of maximum emission from an ideal black body is Plank’s law
Correct answer: D
Solution
(d) A good absorber is a good emitter hence option (a) is wrong. Every body stops absorbing and emitting radiation at 0 K hence option (b) is wrong.The energy of radiation emitted from a black body is not same for all wavelength hence option (c) is wrong.
Plank’s law relates the wavelength (λ) and temperature (T) according to the relation . Hence option (d) is correct.
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