In a solar system far far away, the sun's intensity is 100 W/m2 for a planet located a distance R away. What is the sun's intensity for a planet located at a distance 5 R from the Sun

The sun's intensity for a planet located at a distance 5 R from the Sun is 4 W/m²

Explanation:

The intensity of Sun located at a distance of R away is .

We need to find the sun's intensity for a planet located at a distance 5 R from the Sun. Intensity is given by :

So,

Here, I₁ = 100 W/m² and r₁ = R and r₂ = 5R

So, the sun's intensity for a planet located at a distance 5 R from the Sun is 4 W/m².

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