JEE Main 2019 Physics question
A metal plate of area m is illuminated by a radiation of intensity 16 mW/m. The work function of the metal is 5 eV. The energy of the incident photons is 10 eV and only 10% of it produces photo electrons. The number of emitted photoelectrons per second and their maximum energy, respectively, will be:
Answer: (C)
Solution
Power = W ⇒ photons/s;
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