Question

A sound wave of wave length 100 m travels 1 km in 2 sec what is velocity of sound.
A
50 m/s
B
5 m/s
с
0.5 m/s
D
500 m/s​

Answer 1

Answer:

hope this answers will be helpful

Answer 2

Answer:

D) 500 m/s

Explanation:

Time taken by sound to travel 1000m (1 km) = 2 sec

Time taken by the sound to travel 100m= (2*100)/1000

                                                                   = 0.2 sec

Frequency=1/T = 1/0.2 = 5Hz

Therefore,

Velocity of sound = Wavelength * Frequency

Velocity= 100*5

Velocity=500m/s