Dual Nature Of Light Question 429
Question: Light of wavelength 4000 $ \overset{o}{\mathop{A}}, $ is incident on a sodium surface for which the threshold wave length of photo electrons is 5420 $ \overset{o}{\mathop{A}}, $ . The work function of sodium is
Options:
A) 4.58 eV
B) 2.29 eV
C) 1.14 eV
D) 0.57 eV
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ W_{0}=\frac{12375}{{\lambda_{0}}(\overset{o}{\mathop{A}},)}=\frac{12375}{5420}=2.29eV $
BETA
