A) 250 Hz
B) 375 Hz
C) 256 Hz
D) 384 Hz
Correct Answer: B
Solution :
\[{{n}_{1}}{{l}_{1}}={{n}_{2}}{{l}_{2}}\Rightarrow 250\times 0.6={{n}_{2}}\times 0.4\Rightarrow {{n}_{2}}=375\]\[\Rightarrow {{n}_{2}}=375Hz\]You need to login to perform this action.
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