The suns rays are focused using a lens as a burning glass, Physics

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The suns rays are focused using a lens as a burning glass

The sun's rays are focused, using a lens as a "burning glass." All the visible sunlight entering a lens of radius 3.30 centimeter is concentrated in a circular spot of radius 1.04 millimeter. Obtain the intensity of visible light in the spot if the intensity of visible light striking the lens is 728 W/m².

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Physics: The suns rays are focused using a lens as a burning glass

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