A) \[2\times {{10}^{8}}m/s\]
B) \[2\times {{10}^{7}}m/s\]
C) \[2\times {{10}^{6}}m/s\]
D) \[2\times {{10}^{5}}m/s\]
Correct Answer: B
Solution :
\[v=\frac{c\Delta \lambda }{\lambda }=\frac{3\times {{10}^{8}}\times (706-656)}{656}=\frac{1500}{656}\times {{10}^{7}}\] \[=2\times {{10}^{7}}m/s\]You need to login to perform this action.
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