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Grade 11,

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A light source is emitted is 3 type of radiations 310nm, 60nm, 1000nm.A 3W power is equally distributed among the 3 wavelength. If the metal surface has work function=1.75ev. Calculate the total number of photoelectrons emitted per sec and current in ampere

A light source is emitted is 3 type of radiations 310nm, 60nm, 1000nm.A 3W power is equally distributed among the 3 wavelength. If the metal surface has work function=1.75ev. Calculate the total number of photoelectrons emitted per sec and current in ampere

Grade:11

1 Answers

Vikas TU
14149 Points
7 years ago
  1. E = 1240/310 = 4 ev 
4 ev - 1.75 = eV
2.25 eV = eV
covert it in Joule and the equate it to nhc/310*(10)^-9
Simlarly do for 600 and 1000 nm.

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