Questions
Thermal radiation falls in
a
Visible region
b
Cosmic region
c
Ultra violet region
d
Infrared region
detailed solution
Correct option is D
Wavelength of visible radiation lies between 4000 A0and 7000 A0. Wavelength of thermal radiation is more than 7000 A0. So option - (4) is right.Talk to our academic expert!
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Energy E radiated per sec per unit area of a black body is given as is:
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