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A black body is at a temperature of $5760 K$ . The energy of radiation emitted by the body at wavelength $250 n m$ is $U_{1}$ , at wavelength $500 n m$ is $U_{2}$ and that at $1000 n m$ is $U_{3}$ . Wien’s constant, $b = 2.88 \times 10^{6} n m K$ . Which of the following is correct?

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U1>U2

U2>U1

U1=0

U3=0

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detailed solution

Correct option is B

According to Wein's displacement law λm=bT=2.88×106nmK5760 K=500nmClearly from graph U1U3

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A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm isU1 , at wavelength 500 nm is U2 and that at 1000 nm is U3. Wien’s constant, b=2.88×106nmK. Which of the following is correct?

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A black body is at a temperature of $5760 K$ . The energy of radiation emitted by the body at wavelength $250 n m$ is $U_{1}$ , at wavelength $500 n m$ is $U_{2}$ and that at $1000 n m$ is $U_{3}$ . Wien’s constant, $b = 2.88 \times 10^{6} n m K$ . Which of the following is correct?