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
Guess which sound has a higher pitch: guitar or car horn?
Select the correct alternative :
Wavelength is measured in
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
What type of sound is produced by elephants and whales?
Name three animals, which can hear ultrasonic vibrations.
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?
Name three animals which can hear ultrasonic vibrations.
Sound travels in the air as ______ wave.
