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A metal plate of area 1 × 10 –4 m 2 is illuminated by a radiation of intensity 16 mW/m 2 . 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 -

1. 10 14 and 10 eV
2. 10 12 and 5 eV
3. 10 11 and 5 eV
4. 10 10 and 5 eV

Correct answer: 10 10 and 5 eV

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