Dual Nature Of Light Question 298
Question: If work function of metal is 3 $ eV $ then threshold wavelength will be [RPMT 2000]
Options:
A) 4125 Å
B) 4000 Å
C) 4500 Å
D) 5000 Å
Show Answer
Answer:
Correct Answer: A
Solution:
$ {\lambda_{0}}=\frac{12375}{W_{0}(eV)}=\frac{12375}{3}=4125{\AA} $