Which law determines the wavelength at which the emissive power of a blackbody reaches its peak?

Heat Transfer MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Heat Transfermechanical-engineering-mcqs › heat-transfer
Published
24 Jan 2019
Last updated
28 May 2026

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Explanation

The wavelength corresponding to the maximum emissive power of a blackbody is described by Wien’s displacement law. Planck’s law provides the spectral distribution of radiation, Stefan-Boltzmann law relates total emissive power to temperature, Fourier’s law deals with heat conduction, and Kirchhoff’s law concerns emissivity and absorptivity.

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