A silver ball of radius 4 8cm is suspended by a thread in the vacuum...

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A silver ball of radius 4 8cm is suspended by a thread in the vacuum chamber UV light of wavelength 200 nm is incident on the ball for some time during which a total energy of 1 107 J falls on the surface Assuming on an average one out of 103 photons incident is able to eject electron number of photo electron ejected are 1 10 1 2 106 3 108 4 10 2

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