A) 4000 Å, 7500 Å
B) 5500 Å, 6000 Å
C) 4000 Å, 6000 Å
D) None of these
Correct Answer: D
Solution :
Threshold wavelength \[{{\lambda }_{0}}=\frac{12375}{2.1}=5892.8\,{\AA}\]You need to login to perform this action.
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