A black body at a temperature of 2270C radiates heat at the rate of 20calm-2 s-1. When its temperature rises to 7270C the heat radiated will be

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

40 units

160 units

320 units

640 units

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Heat radiated by black bodyE=σAT4⇒EαT4 or E1E2=T14T24 or 20E2=50010004=124=116 ⇒E2=16×20calm-2 s-1 =320calm-2 s-1

Watch 3-min video & get full concept clarity