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Transmission of Heat — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsTransmission of Heat1 Mark
MCQ
The energy distribution $E$ with the wavelength $(\lambda)$ for the black body radiation at temperature $T$ Kelvin is shown in the figure. As the temperature is increased the maxima will
Image
  • ✓
    Shift towards left and become higher
  • B
    Rise high but will not shift
  • C
    Shift towards right and become higher
  • D
    Shift towards left and the curve will become broader
✓

Answer

Correct option: A.
Shift towards left and become higher
(a) According to Wein's displacement law $\lambda_m \propto \frac{1}{T}$. Hence, if temperature increases $\lambda_m$ decreases i.e., peak of the $E-\lambda$ curve shift towards left.

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