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A black Body is at a temperature of 2880K.The energy of radiation emiited by this object with wavelength between 499nm and 500nm is U1, between 999nm and 1000nm is U2 and between 1499nm and 1500nm is U3.The Wien constant,b is 2.88*10^6 nm-K.Then (a)U1= 0 (b)U3= 0 (c)U1>U2 (d)U2>U1

A black Body is at a temperature of 2880K.The energy of radiation emiited by this object with wavelength between 499nm and 500nm is U1, between 999nm and 1000nm is U2 and between 1499nm and 1500nm is U3.The Wien constant,b is 2.88*10^6 nm-K.Then


(a)U1= 0


(b)U3= 0


(c)U1>U2


(d)U2>U1

Grade:12

3 Answers

Karteek Ravindra Bhat
19 Points
10 years ago

The answer is c bcs wavelength and temperature are inveresly prop to each other!!!!!!!!!

dvm srikant
39 Points
10 years ago

the answer is c                                                                                                                                                                                                          pls apoprove

Chetan Mandayam Nayakar
312 Points
9 years ago

A black body at a given temperature emits different amounts of energy at different wavelengths. Wien' law states that the maximum energy is emitted at wavelength lambda =b/T= 1000k,

Therefore, answer is (d) 

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