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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Thermodynamics

Olympiad workbook · NSEP · Thermodynamics

The Sun having radius R and surface temperature T , emits radiation...

The Sun having radius

R

and surface temperature

T

, emits radiation as a perfect emitter. The distance of the earth from the sun is

r

and the radius of the earth is

R_{\mathrm{e}}

. The total radiant power incident on the earth is

Options

A $\frac{R_e^2 R^2 \sigma T^4}{4 \pi r^2}$
B $\frac{R_e^2 R^2 \sigma T^4}{r^2}$
C $\frac{4 \pi R_e^2 R^2 \sigma T^4}{r^2}$
D $\frac{\pi R_e^2 R^2 \sigma T^4}{r^2}$

Correct answer

D. $\frac{\pi R_e^2 R^2 \sigma T^4}{r^2}$

Step-by-step solution

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