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NEST2022PhysicsThermal Properties of Matter

A star of radius R_S and surface temperature of T_S , irradiates a planet of radius R_E . The distance between the star and the planet is R_ S E . The average temperature T_E on the surface of the planet can be estimated from balance of energy flux between incoming and outgoing radiation. Assuming that the radiation from the star is uniformly distributed over the planet, select the correct option.

Options

  1. AT_E R_E^2
  2. BT_E R_ S E ⁻¹
  3. CT_E depends on Stefan-Boltzmann constant.
  4. DT_E R_S^ 1 / 2

Correct answer

D. T_E R_S^ 1 / 2

Step-by-step solution

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