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  • The figure shows the variation of photocurrent with anode potential for a photo-sensitive surface for three different radiations. Let <img alt="\mathrm{I_a, I_b\: and \: I_c}" src="/latex-image/?%5

The figure shows the variation of photocurrent with anode potential for a photo-sensitive surface for three different radiations. Let \mathrm{I_a, I_b\: and \: I_c} be the intensities and \mathrm{f_a, f_b \: and\: f_c} be the frequencies for the curves \mathrm{a, b \: and \: c} respectively.


 

Option: 1

\mathrm{f_a=f_b \: and \: I_a \neq I_b}
 


Option: 2

\mathrm{f_a=f_c\: and\: I_a=I_c}

 


Option: 3

\mathrm{f_a=f_b \: and \: I_a=I_b}
 


Option: 4

\mathrm{f_b=f_c\: and \: I_b=I_c}


Answers (1)

best_answer

The stopping potential for curves \mathrm{a \: and\: b} is same.
\mathrm{\therefore \quad f_a=f_b}
Also saturation current is proportional to intensity.
\mathrm{ \therefore I_a<I_b \\ }

 

Posted by

Irshad Anwar

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