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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A silver of radius 4.8 cm is suspended by a thread in the vacuum chamber . UV light of wavelength 200nm is incident on the ball for some times during which a total energy of 1×10^−7J falls on the surface . Assuming on an average one out of 10^6 photons incident is able to eject electron. The potential on sphere will be

A silver of radius 4.8 cm is suspended by a thread in the vacuum chamber . UV light of wavelength 200nm is incident on the ball for some times during which a total energy of 1×10^−7J falls on the surface . Assuming on an average one out of 10^6 photons incident is able to eject electron. The potential on sphere will be

If white light of range 400 - 700 nm has replaced 600 nm light one of the wave lengths of light that forms maxima exactly at point O will be