The speed of a wave is 350 m/s and its wavelength 50 cm, then the frequency of the wave will be:
(A) 13500 Hz
(B) 700 Hz
(C) 400 Hz
(D) 300 Hz
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Answer:
(B) 700 Hz
Explanation:
Speed of a wave is = 350 m\s [Given]
Wavelength of wave= 50 cm=0.5 m [1 metre = 100 centimetre] {Given}
To find frequency = ?
As we know that :
Speed = wavelength x frequency {Formula used}
Frequency = Speed\wavelength
Frequency = 350\0.5
Frequency = 700 Hz [Unit of frequency is Hertz].
Which is denoted by Hz.
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