First slide

Photo Electric Effect

Question

The maximum wave length of radiation that can produce Photoelectric effect in a certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

Moderate

A

12.4 eV
B

6.2 eV
C

100 eV
D

200 eV

Solution

Maximum Kinetic Energy
$K_{\max} = \frac{hc}{e} [\frac{1}{λ} - \frac{1}{λ_{0}}] eV = 12375 (\frac{1}{1000} - \frac{1}{2000}) eV = 6 .2 e V$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App