Question

sound waves to wave length 2 cm have velocity of 34o m/s in air what is their frequany . 1. 34000 Hz 2. 17o Hz 3. 17000 Hz 4. 340 Hz​

Answer 1

Answer:

3. 17000 Hz

Explanation:

velocity = frequency x wavelenth

frequency = velocity / wavelength

= 340 / 0.02

= 17000 Hz..

Answer 2

Answer:

option (c) = 17000Hz

Explanation:

velocity = 340m/s

Wavelength = 2cm = 0.02m

we know that

velocity = Wavelength × frequency

340 = 0.02 × f

f = 17000Hz