1.

Given that a photon of light of wavelength 10,000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\] has an energy equal to 1.23 eV. When light of wavelength 5000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\] and intensity \[{{I}_{0}}\] falls on a photoelectric cell, the saturation current is \[0.40\times {{10}^{-6}}\]\[\overset{\text{o}}{\mathop{\text{A}}}\,\] and the stopping potential is 1.36 V; then the work function is

A. \[0.43\,eV\]       
B. \[1.10\,eV\]
C. \[1.36\,eV\]       
D. \[2.47\,eV\]
Answer» C. \[1.36\,eV\]       


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