A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm is U₁, at wavelength 500 nm is U₂ and that at 1000 nm is U₃. Wien's constant, b = 2.88 × 10⁶ nmK. Which of the following is correct?(a) U₁ = 0(b) U₃ = 0(c) U₁ > U₂(d) U₂ > U₁
Answers
Answered by
70
Answer:
D) U2>U1
Explanation:
Temperature of the body = T = 5760K (Given)
Energy of radiation emitted by the body at wavelength = 250 nm in U1 (Given)
Energy of radiation emitted by the body at wavelength = 500 nm is U2 (Given)
Energy of radiation emitted by the body at wavelength = 1000 nm is U3 (Given)
Therefore, according to the Wien’s law -
λmT=b
where, b = Wien’s constant = 2.88 x 108 nmK
= λm=b/T
= λm = 2.88x106 nmK/5760K
= λm=500 nm
Therefore. λm= wavelength corresponding to maximum energy, thus, U2>U1.
Answered by
3
Answer:
U2 > U1
Explanation:
as the wavelength associated with this temperature is maximum
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