Question

the wavelength of the vibration produced on the surface of the water is 3 cm. if the wave velocity is 15 m/s, calculate
i) the number of waves produced in 1 s
ii)time required to produce 1 wave

Answer 1

Answer:

See,

v = Wavelength × Frequency

15 = 3/100 × f

500 = f

So,

Number of waves in 1 second = 500

WKT,

F= 1/t

So,

Time = 1÷500

=0.002 seconds

Answer 2

Answer:

wavelength = 3cm=0.03m

velocity=15m/s

f=?

t=?

velocity = wavelength ×frequency

15 = 0.03 × f

f = 15 ÷ 0.03

f = 500hz

t = 1/f

t = 1/500

t=0.002 (sec)

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