A) 306km/s
B) 204 km/s
C) 185 km/s
D) 158 km/s
Correct Answer: B
Solution :
\[v=C\frac{\Delta \lambda }{\lambda }\] \[=3\times {{10}^{8}}\times \frac{(5896-5892)}{5892}\] \[=0.00204\times {{10}^{8}}=204\,km/s\]
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