A) \[\frac{5v}{3}\]
B) \[\frac{4}{3}v\]
C) \[2v\]
D) \[\frac{3v}{2}\]
Correct Answer: D
Solution :
\[e{{V}_{s}}=hv-\phi \] | |
\[\left\{ \frac{-e{{V}_{o}}}{2}=h\nu -\phi \right\}\times 2\] | ? (1) |
\[e{{V}_{s}}=\frac{h\nu }{2}-\phi \] | ? (2) |
\[0=2hv-2\phi -\frac{hv}{2}+\phi \] | |
\[\phi =\frac{3h\nu }{2}\] | |
\[\Rightarrow \] \[{{\nu }_{th}}=\frac{3\nu }{2}.\] |
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