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  4. In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.17 s. The frequency of the wave is

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Q. In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is $0.17\,s$. The frequency of the wave is

ManipalManipal 2008Waves

Solution:

Time for maximum displacement $t=0.17\, s$ Time period $T$ for one vibration
$=4 t=4 \times 0.17=0.68\, s$
Frequency $=\frac{1}{\text { time period }(T)}=\frac{1}{0.68} $
$=1.47\, Hz$