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Photons of energy \(3.2 \mathrm{eV}\) are incident on a photosensitive surface. If the stopping potential for the emitte…

Q1

Photons of energy \(3.2 \mathrm{eV}\) are incident on a photosensitive surface. If the stopping potential for the emitted electrons is \(1.5 \mathrm{~V}\), the work function for the surface is :

a

\(1.5 \mathrm{eV}\)

b

\(1.7 \mathrm{eV}\)

c

\(3 \cdot 2 \mathrm{eV}\)

d

\(4 \cdot 7 \mathrm{eV}\)

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