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Intensity vs Photocurrent

Q15/15 A perf...

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Q15/15 A perfectly reflecting solid hemisphere of radius }R is placed } in the path of a parallel beam of light of large aperature. If the beam } carries an intensity }, the force exerted by the beam on the } hemisphere is

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Q. A perfectly reflecting solid hemisphere of radius R is placed in the path of a parallel beam of light of large aperture. If the beam carries an intensity I, the force exerted by the hemisphere is

Q. A partially reflecting surface ( Solid hemisphere) of radius

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