Question

If the speed of the wave shown below in the figure is 320m/s, then its wavelength and frequency are...?
PLEASE ANS. ASAP.

Answer 1

Answer:

(3) 8cm, 4000 Hz

Step by step explanation:

It is given that the speed of the wave is 320 m/s.

It is also visible from the diagram that the distance 'x' = 20 cm.

The number of waves visible in the diagram is 2 and a half waves.

Therefore, the wavelength = x/number of waves = 20/2.5 = 8 cm.

Speed = Frequency*Wavelength

Frequency = Speed/Wavelength = 320/0.08 = 4000 Hz.

Therefore, the correct answer is (3) 8cm, 4000 Hz

Answer 2

Answer:

option 3 8cm , 4000Hz

hope it helps