Question

The speed of a waves is 350 m/s and wavelength is 70 cm. The frequency of wave is
INTSE Stage 1, 2018)
(A) 500 Hz
(B) 700 Hz
(C) 50 Hz
(D) 200 Hz​

Answer 1

Answer:

The frequency of wave is 50 Hz.

As we know,

wave velocit(v)= frequency * wave length

Explanation:

Then substituting,

wave velocity/wave length = frequency.

Answer 2

Solution :

Given ,

Speed of wave = 350 m/s

Wavelength = 70 cm

We know that ,

$\pink{ \sf \underline{ \: \: \fbox{ \fbox{ \red{Frequency = \frac{speed }{wavelengh} }}}}}$

Substitute the values , we obtain

$\sf \hookrightarrow Frequency = \frac{350}{70} \\ \\ \sf \hookrightarrow Frequency = 50 \: \: hz$

Hence , the frequency is 50 hz