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

A photoelectric surface is illuminated successively by monochromatic light of wavelengths λ and λ2. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface is :

A
hc2λ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
hcλ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
hc3λ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
3hcλ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B hc2λ
K.Eλ=hcλϕ
K.Eλ/2=hcλ/2ϕ
K.Eλ/2=3(K.Eλ)
ϕ=hc2λ

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
de Broglie's Hypothesis
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon