The maximum energy in the thermal radiation from a heat source occurs at a wavelength of $12 \times 10^{- 5} c m$ . According to Wien's displacement law, the temperature of this source will be 'n' times the temperature of another source for which the wavelength at maximum energy is $6 \times 10^{- 5} c m$ . Then the value of n is

1/2

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Solution

The correct option is A 1/2
$λ \propto \frac{1}{T}$ Wein's displacement law
$λ_{1} T_{1} = λ_{2} T_{2} 12 \times 10^{- 5} \times n T = 6 \times 10^{- 5} \times T n = \frac{1}{2}$

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Q. The maximum energy in the thermal radiation from a hot source occurs at a wavelength of

11 \times 10^{- 5}

cm. According to Wien's law, the temperature of this source (on Kelvin scale) will be n times the temperature of another source (on Kelvin scale) for which the wavelength at maximum energy is

5.5. \times 10^{- 5}

cm. The value n is

The maximum energy in the thermal radiation from a hot source occurs at a wavelength of $11 \times 10^{- 5}$ cm. According to Wein's law, the temperature of the source (on Kelvin scale) will be 'n' times the temperature of another source (on Kelvin scale) for which the wavelength at maximum energy is $5.5 \times 10^{- 5}$ cm.The value 'n' is