wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The electric field associated with a monochromatic beam becomes zero, 1.2×1015 times per second. Find the maximum kinetic energy of the photoelectrons when this light falls on a metal surface whose work function is 2.0 eV.

Open in App
Solution

The electric field becomes 0, 1.2×1015 times per second.
Frequency = 1.2×10152=0.6×1015 Hz
hv = ϕ0+K.E
hvϕ0=K.E
KE=6.63×1034×0.6×10151.6×10192
K.E=0.482 ev = 0.48 ev.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Experimental Setup
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon