A) \[\frac{8}{7}\]
B) \[\frac{7}{8}\]
C) \[\frac{3}{5}\]
D) \[\frac{5}{3}\]
Correct Answer: B
Solution :
According to question \[{{({{n}_{7}})}_{closed}}={{({{n}_{4}})}_{open}}\] \[7\times \frac{v}{4{{l}_{c}}}=4\left( \frac{v}{2{{l}_{o}}} \right)\] \[\frac{{{I}_{c}}}{{{I}_{o}}}=\frac{7}{8}\]You need to login to perform this action.
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