Question

Identify the correct statement/s from the following A. Photo-electron current is inversely proportional to light intensity for all retarding voltages.
B. Stopping potential does not correspond to maximum photo-electron energy.
C. Stopping potential is not same for all intensities of light of same frequency.
D. Above threshold frequency, photo-electron range in energy form 0 to a maximum value.
E. Photo-electron current is proportional to light intensity for all retarding voltages. Choose the correct answer from the options given below:

• A. A, B, C only
• B. B, C, D only
• C. C, D, E only
• D. D, E only

Hint:

Stopping potential depends on frequency, not intensity of light.

Answer 1

The Correct Option is D

Concept:
Photoelectric effect depends on frequency and intensity of light.
Step 1:
Photoelectric current increases with intensity. Thus A is incorrect.
Step 2:
Stopping potential corresponds to maximum kinetic energy. Also it depends on frequency, not intensity. Thus B and C are incorrect.
Step 3:
Photoelectrons have range of energies from zero to maximum value. Photoelectric current is proportional to intensity. Thus D and E are correct.
Step 4:
\[ D,\quad E \] \[ \boxed{\text{Correct Option = (4)}} \]