A) \[5890\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) \[3680\overset{\text{o}}{\mathop{\text{A}}}\,\]
C) \[9424\overset{\text{o}}{\mathop{\text{A}}}\,\]
D) \[15078\overset{\text{o}}{\mathop{\text{A}}}\,\]
Correct Answer: B
Solution :
Frequency doesn?t depend on medium \[\frac{{{\mu }_{1}}}{{{\mu }_{2}}}=\frac{{{V}_{2}}}{{{V}_{1}}}=\frac{{{\lambda }_{2}}f}{{{\lambda }_{1}}f},\]or\[{{\mu }_{2}}{{\lambda }_{2}}={{\lambda }_{1}}{{\mu }_{1}}\] \[{{\mu }_{2}}=3680\overset{\text{o}}{\mathop{\text{A}}}\,\]
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