question_answer

The figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement?

A) Curves a and b represent incident radiations of different frequencies and different intensities

B) Curves a and b represent incident radiations of same frequency but of different intensities

C) Curves b and c represent incident radiations of different frequencies and different intensities

D) Curves b and c represent incident radiations of same frequency having same intensity                       

Correct Answer: B

Solution :

From the two graphs we can conclude that for the graph in question curves \[a\] and \[b\] represent incident radiations of same frequency but of different intensities.