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Relation between the colour and the temperature of a star is given by

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Relation between the colour and the temperature of a star is given by

(a) Wien's displacement law

(b) Planck's law

(c) Hubble's law

(d) Fraunhofer's diffraction law

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Correct option is (a) Wien's displacement law

Every colour has a certain wavelength or range of wavelengths, and only the Wiens displacement law among the options gives the relationship between wavelength and temperature as λT = constant.

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