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Q. What will be the wave velocity, if the radar gives $5.4$ waves per minute and wavelength of the given wave is $10 \,m$?

Rajasthan PMTRajasthan PMT 2000Waves

Solution:

Frequency $n=5.4$ per minute
$=\frac{5.4}{60} Hz$
Velocity $v=n \lambda$
$=\frac{5.4}{60} \times 10=0.9\, m / s$