Dual Nature Of Light Question 262
Question: The maximum wavelength 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 [MP PMT 1994]
Options:
A) 12.4 eV
B) 6.2 eV
C) 100 eV
D) 200 eV
Show Answer
Answer:
Correct Answer: B
Solution:
$ {K_{\max }},(eV)=12375,[ \frac{1}{\lambda ,({\AA})}-\frac{1}{{\lambda_{0}}({\AA})} ] $ $ =12375,[ \frac{1}{1000}-\frac{1}{2000} ] $ $ =6.2,eV $
BETA
