JEE Main & Advanced
Physics
Photo Electric Effect, X- Rays & Matter Waves
JEE PYQ-Photo Electric Effect X-rays
question_answer
When a certain photosensitive surface is illuminated with monochromatic light of frequency u, the stopping potential for the photo current isWhen the surface is illuminated by monochromatic light of frequencythe stopping potential is The threshold frequency for photoelectric emission is- [JEE Main 12-Jan-2019 Evening]
A)
B)
C)
D)
Correct Answer:
D
Solution :
[d] Einsteins photoelectric equation in the two cases is given by