A silver ball of radius 4.8 cm is suspended by a thread in the vacuum chamber. UV light of wavelength 200 nm is incident on the ball for some times during which a total energy of 1 × × 10 –7 J falls on the surface. Assuming on an average one out of 10 3 photons incident is able to eject electron. The potential on sphere will be
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C
The total number of photons striking the surface of the ball is
The total number of electrons ejected is
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