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Covalent Bond

The earth rad...

Question

The earth radiates in the infra-red region of the spectrum. The spectrum is

correctly given by

A

Wien's law

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B

Rayleigh jeans law

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C

Planck's law of radiation

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D

Stefan's law of radiation

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Solution

The correct option is C
Planck's law of radiation

C

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T

of a star can be estimated by measuring the wavelengths

λ_{m}

at which the intensity of the emitted radiation is maximum and then using Wien's displacement law which states that

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=

b

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is a constant called Wiens constant and the above relation is called Wiens Displacement Law which states that as the temperature increases, the maximum intensity of emission shifts (or is displaced) towards the shorter wavelengths. The value of constant b has been found experimentally to be

2.89 \times 10

^{- 3}

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