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In an experiment on photo electric emiss...

In an experiment on photo electric emission, following observations were made,
(i) Wavelength of the incident light `=1.98xx10^(-7)m`,
(ii) Stopping potential `=2.5 "volt"`.
Find: (a) Kinetic energy of photoelectrons with maximum speed.
(b) Work function and
(c )Threshold frequency,

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