A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. The area of the mirror is 2.09 m²and the light exerts a force of 1.91 μN on it.Calculate the intensity I of the light.I =W/m²

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University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

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Chapter16: Waves

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Problem 79P: A device called an insolation meter is used to measure the intensity of sunlight. It has an area of...

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A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. The area of the mirror is 2.09 m² and the light exerts a force of 1.91 μN on it. Calculate the intensity I of the light. I = W/m²