A) \[8\times {{10}^{14}}Hz\]
B) \[8\times {{10}^{56}}Hz\]
C) \[\text{8 }\times \text{ 1}{{0}^{\text{1}0}}\text{ Hz}\]
D) \[\text{8 }\times \text{ 1}{{0}^{\text{11}}}\text{ Hz}\]
Correct Answer: A
Solution :
\[{{W}_{0}}=h{{v}_{0}}\] \[\Rightarrow \] \[{{v}_{0}}=\frac{{{W}_{0}}}{h}\] \[=\frac{3\cdot 3\times 1\cdot 6\times {{10}^{-19}}}{6\cdot 6\times {{10}^{-34}}}\] \[=\frac{528}{660}\times {{10}^{15}}\] \[\mathbf{=8\times 1}{{\mathbf{0}}^{\mathbf{14}}}\mathbf{Hz}\]
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