Advertisements
Advertisements
प्रश्न
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.
Advertisements
उत्तर
Distance between one crest and one trough of a sea wave = 4.5 m
`=> lambda/2 = 4.5`
⇒ λ = 4.5 × 2 = 9 m
Frequency = 240 min-1
f = `240/60`s-1
f = 4 s-1 or 4 Hz
Wave velocity = v = λf
v = 9 × 4 = 36 ms-1
APPEARS IN
संबंधित प्रश्न
What is loudness of sound? What factors does it depend on?
What type of waves are illustrated by the movement of a rope whose one end is fixed to a pole and the other end is moved up and down?
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
What causes sound?
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
State three conditions necessary for hearing sound.
Unwanted sounds are called ______.
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
