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#1 Posted 11:38pm 17-03-10 ????black body at temp 2880K.energy of radiation emmited by object with wavelength b/w 499nm and 500nm is U1, b/w 999nm and 1000nm is U2,b/w 1499nm and 1500 nm is U3.Then a)U1=0 b)U3=0 c)U1>U2 d)U2>U1 |
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#2 Posted 00:06am 18-03-10 Re: ????λT= CONSTANT.....................(1) =2.89*10[p]-3[/p] E =κT[p]4[/p]......................(2) SUBSTITUTING THE VALUS FOR T. U1>U2 . ANS: C I HOPE I AM RIGHT
SUCCESS IS NOT FINAL..FAILURE IS NOT FATAL...ITS THE COURAGE TO CONTINUE THAT COUNTS .... Edited on 00:20am 18-03-10 |
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#3 Posted 00:08am 18-03-10 Re: ????its single choice |
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#4 Posted 00:25am 18-03-10 Re: ????Ans ) (d) Use Wein's Displacement Law
Science is always wrong. It never solves a problem without creating ten more.
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