Q.
A. Curves (a) and (b) represent incident radiations of same frequency but of different intensities.
B. Curves (b) and (c) represent incident radiations of different frequencies and different intensities.
C. Curves (b) and (c) represent incident radiations of same frequency have same intensity.
D. Curves (a) and (b) represent incident radiations of different frequencies and different intensities.
E. None of the above
Correct choice: A
Explanation: