1. Tardigrade
  2. Question
  3. Physics
  4. The intensity of solar radiation on the earth is 450 W / m 2. Assuming the earth to be perfect black body, if the radiation pressure on the earth is p × 10-7 N / m 2 then find p.

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Q. The intensity of solar radiation on the earth is $450\, W / m ^{2}$. Assuming the earth to be perfect black body, if the radiation pressure on the earth is $p \times 10^{-7} N / m ^{2}$ then find $p$.

Electromagnetic Waves

Solution:

$P=\frac{I}{c}=\frac{450}{3 \times 10^{8}}$
$=15 \times 10^{-7} \,N / m ^{2}$