Find a retarding potential required to stop the escape of photoelectrons from the metal surface of work function 1.07 electron volts which is irradiated with light of wavelength 332 NM
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use Einstein theory
Vo=hc/e£-¤ /e
where h is plank constant ,
Vo is retarding potential
c is speed of light
£ is wavelength of radiation
e is electron and ¤ is work function
now ,
Vo=(1237.5/332-1.07) volt
=2.6574 volt
Vo=hc/e£-¤ /e
where h is plank constant ,
Vo is retarding potential
c is speed of light
£ is wavelength of radiation
e is electron and ¤ is work function
now ,
Vo=(1237.5/332-1.07) volt
=2.6574 volt
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