A tuning fork of frequency \( 440 \mathrm{~Hz} \) is moving with a velocity of \( 3 \mathrm{~m} ...

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A tuning fork of frequency \( 440 \mathrm{~Hz} \) is moving with a velocity of \( 3 \mathrm{~m} \mathrm{~s}^{-1} \) towards a wall. What will be the number of beats heard between direct and reflected sounds? Take speed of sound as \( 330 \mathrm{~m} \mathrm{~s}^{-1} \)
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