Dual Nature Of Light Question 319
Question: The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be [BHU 2003]
Options:
A) 2900 Å
B) 2500 Å
C) 5380 Å
D) 2000 Å
Show Answer
Answer:
Correct Answer: C
Solution:
$ W_{0}=\frac{12375}{2.3}=5380{\AA} $ .