The light rays having photons of energy 1.8 eV are falling on a metal – McqOptions

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1.	The light rays having photons of energy 1.8 eV are falling on a metal surface having a work function 1.2 eV. What is the stopping potential to be applied to stop the emitting electrons [BHU 2005]
A.	3 eV
B.	1.2 eV
C.	0.6 eV
D.	1.4 eV
Answer» D. 1.4 eV

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