AIPMT PRELIMS2006Physics-Modern Physics
AIPMT PRELIMS 2006 Physics Photoelectric Effect MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A photo-cell employs photoelectric effect to convert:
A
change in the frequency of light into a change in electric voltage
B
change in the intensity of illumination into a change in photoelectric current
C
change in the intensity of illumination into a change in the work function of the photocathode
D
change in the frequency of light into a change in the electric current
Correct Answer
Option B
Detailed Explanation
In a photo-cell, the photoelectric effect causes electrons to be emitted when light of sufficient frequency strikes the photocathode. The intensity of illumination affects the number of emitted electrons, thus changing the photoelectric current.
Found an issue with this question?