A) \[5\times {{10}^{-5}}\,cm\]
B) \[5\times {{10}^{-8}}\,cm\]
C) \[5\times {{10}^{5}}\,cm\]
D) \[5\times {{10}^{8}}\,cm\]
Correct Answer: A
Solution :
\[\lambda =\frac{v}{n}\,;\,n\approx 50,000\,Hz\], \[v=330\]m/sec Þ\[\lambda =\frac{330}{50000}m\] \[=6.6\times {{10}^{-5}}cm\approx 5\times {{10}^{-5}}cm\]You need to login to perform this action.
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