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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: TEMP
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[Post New]25 Mar 2008 00:50:52 IST
    Subject: TEMP
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v_gurucharan (278)

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TEMPRATURE OF BLACK BODY IS RAISED BY 5% HEAT RADIATED WUD INCREASE BY_______________.
    
[Post New]25 Mar 2008 01:51:05 IST
    Subject: Re:TEMP
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dev_22oct (1355)

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 P = Power radiated  in W (J/s) 
 s = Stefan's Constant 5.67 x 10-8 W m-2 K-4
 A = Surface area of body (m²)
 T = Temperature of BODY
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[Post New]25 Mar 2008 01:54:09 IST
    Subject: Re:TEMP
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elastiboysai (2327)

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21.5 percent
use stefans law
u get
P new proportional to (105/100)^4T'
so new power wud be 21.5 percent more
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[Post New]25 Mar 2008 01:58:01 IST
    Subject: Re:TEMP
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dev_22oct (1355)

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now the temp is incresing by 5% therefore the new temp w'll be =1.05T
 
P1/P2 =(T)4/(1.05T)4  =1/1.21
 
% INCREASE (P2 - P1)/P1 X100 = 21%
 
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