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NEET2009PhysicsThermal Properties of MatterActual

A black body at 227^ C radiates heat at the rate of 7 cals / cm ^2 ~s . At a temperature of 727^ C , the rate of heat radiated in the same units will be :

Options

  1. A80
  2. B60
  3. C50
  4. D112

Correct answer

D. 112

Step-by-step solution

P T ^4 aligned & P ₂ P ₁ = ( 1000 500 )^4 & P ₂=16 P ₁=112 aligned

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