A) 1 : 2
B) 2 : 1
C) 4 : 1
D) 1 : 4
Correct Answer: B
Solution :
Work function is given by \[\phi =\frac{hc}{\lambda }\] Or \[\phi \propto \frac{1}{\lambda }\] \[\because \] \[\frac{{{\phi }_{1}}}{{{\phi }_{2}}}=\frac{{{\lambda }_{2}}}{{{\lambda }_{1}}}=\frac{600}{300}=\frac{2}{1}\]You need to login to perform this action.
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