Question

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

Answer 1

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.