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Heat and Thermodynamics question

2006 · Shift 0 · Q108
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Heat and Thermodynamics question

2006 · Shift 0 · Q108

JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1
Assuming the Sun to be a spherical body of radius RRR at a temperature of TKTKTK, evaluate the total radiant powered incident of Earth at a distance rrr from the Sun Where r0 is the radius of the Earth and σ\sigmaσ is Stefan's constant.
  1. A
    4πr02R2σT4r24\pi r_0^2{R^2}\sigma {{{T^4}} \over {{r^2}}}4πr02​R2σr2T4​
  2. B
    πr02R2σT4r2\pi r_0^2{R^2}\sigma {{{T^4}} \over {{r^2}}}πr02​R2σr2T4​
  3. C
    r02R2σT44πr2r_0^2{R^2}\sigma {{{T^4}} \over {4\pi {r^2}}}r02​R2σ4πr2T4​
  4. D
    R2σT4r2{R^2}\sigma {{{T^4}} \over {{r^2}}}R2σr2T4​
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