A) 396
B) 400
C) 404
D) 384
Correct Answer: A
Solution :
\[n\propto \frac{1}{l}\]Þ \[{{n}_{1}}{{l}_{1}}={{n}_{2}}{{l}_{2}}\]Þ \[(n+4)49=(n-4)50\Rightarrow n=396\]You need to login to perform this action.
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