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Physics-

General

Easy

Question

Electromagnetic radiation with energy flux $50 W c m to the power of negative 2 end exponent$ is incident on a totally absorbing surface normally for 1 hour. If the surface has an area of 0.05m² , then the average force due to the radiation pressure, on it is;

$8.3 \times 10^{- 7}$ N
$8.3 \times 10^{- 5}$ N
$1.2 \times 10^{- 7}$ N
$1.2 \times 10^{- 5}$ N

The correct answer is: $8.3 cross times 10 to the power of negative 5 end exponent$ N

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