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Question

The maximum energy in the thermal radiation from a hot source  occurs at a wavelength of 11×105 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 5.5×105 cm.The value 'n' is


  1. 2

  2. 1

  3. 4


Solution

The correct option is B


T1T2=λm2λm1=12n=12

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