Physics - Modern Physics Question with Solution | TestHub
PhysicsModern PhysicsPhotoelectric effectMedium2 minQB
PhysicsMediummultiple choice
When a monochromatic point source of light is at a distance of 0.2 m from a photoelectric cell, the cut off voltage and saturation current are respectively 0.6 volt and 18.0 mA. If the same is placed 0.6 m away from the photoelectric cell, then.
Options:(select one or more)
Answer:
B, D
Solution:
Stopping potential depends only on photon frequency, so it stays 0.6 V (B)
Saturation current ∝ intensity ∝ , so it falls to 2.0 mA (D)
Answers (B, D)
Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect
⏱ 2mℹ️ Source: QB
Doubts & Discussion
Loading discussions...
