When the photons of energy $hv$ fall on a photosensitive metallic surface (work function $hv_{0}$) electrons are emitted from the metallic surface. The electrons coming out of the surface have some kinetic energy. The most energetic ones have the kinetic energy equal to [image:11_image5.emf]

Question

Dr. Abubacker · Accepted Answer

(a) The value of threshold frequency $v_{0}$ for $A$ is less than that for $B$, hence $\phi_{A} < \phi_{B}$

Q. When the photons of energy $hv$ fall on a photosensitive metallic surface (work function $hv_{0}$) electrons are emitted from the metallic surface. The electrons coming out of the surface have some kinetic energy. The most energetic ones have the kinetic energy equal to

Explanation

Reviewed by Dr. Abubacker

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