A) \[1.25\times {{10}^{3}}m/s\]
B) \[\frac{hv}{4}\]
C) \[\frac{hv}{3}\]
D) \[\frac{hv}{2}\]
Correct Answer: B
Solution :
According to the question, \[2.50\times {{10}^{-3}}m/s\] ??..(i) \[1.25\times {{10}^{3}}m/s\] ???(ii) Dividing Eq. (i) by Eq. (ii), we get \[\frac{hv}{4}\] \[\frac{hv}{3}\] \[\frac{hv}{2}\] \[\frac{2hv}{3}\] Threshold wavelength for metallic surface \[30\mu A\]You need to login to perform this action.
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