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You are standing 2.0 m from a 150-W lightbulb A - If the pupil of your...

You are standing 2.0 m from a 150-W lightbulb

A - If the pupil of your eye is a circle 5.0 mm in diameter, how much energy enters your eye per second? (Assume that 5.0% of the lightbulb's power is converted to light.)

B - Repeat part A for the case of a 1.0-mm-diameter laser beam with a power of 0.60 mW .

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