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JEE Main 10 Jan 2019 Shift 2 Solved Paper

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Question : 18

Total: 90

A metal plate of area 1 × 10–4m2 is illuminated by a radiation of intensity 16 mW/m2 .The work function of the metal is 5eV. The energy of the incident photons is 10 eV and only 10% of it produces photo electrons. The number of emitted photo electronsper second and their maximum energy, respectively, will be : [1 eV = 1.6 × 10–19 J]

1010 and 5 eV
1014 and 10 eV
1012 and 5 eV
1011 and 5 eV

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