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If the sun's surface radiates heat at 6....

If the sun's surface radiates heat at `6.3 xx 10^(7) Wm^(-2)`. Calculate the temperature of the sun assuming it to be a black body `(sigma = 5.7 xx 10^(-8)Wm^(-2)K^(-4))`

A

`5.8xx10^3`K

B

`8.5 xx10^3` K

C

`3.5 xx 10^8` K

D

`5.3 xx 10^8` K

Text Solution

Verified by Experts

The correct Answer is:
A
Since, `E=sigma T^4`
`implies T^4 =(E)/(sigma)=(6.3 xx 10^7)/(5.7 xx 10^(-8)) implies T=5.8 xx 10^3` K
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