1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# For photoelectric emission, tungsten requires light of 2300˚A. If light of 1800 ˚A wavelength is incident, then emission :

A
Takes place
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Doesn't take place
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
May or may not lake place
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Depends on frequency
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A Takes placeBy Einstein's photoelectric equation, the maximum kinetic energy of the photoelectrons is KEmax=hf−hf0where h= Plank's constant, f= frequency of incident light and f0= threshold frequency for the metal.As kinetic energy is positive, so we must have f>f0 for the occurrence of photoelectric effect. Here, f=2300Ao and f0=1800AoAs f>f0, photo emission will take place.

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Stopping Potential Revisited
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program