Advertisements
Advertisements
Question
Select the correct option:
If the frequency of a wave is 25 Hz. the total number of compressions and rarefactions passing through a point in 1 second is :
Options
25
50
100
none of these
Advertisements
Solution
50
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
A sound is a form of energy.
Arrange the speed of sound in gases Vg, solids Vs and liquids VLin an ascending order.
A cannon is fired at A (see diagram). An observer at B hears two sounds. The first sound is heard after 1 second and the second 3s after the observer sees the flash. (Velocity of sound = 340 ms−1)
(i) Why does the observer see the flash before he hears the sound?
(ii) Calculate the distance x between the observer and the wall.

A medium is necessary for ______ of sound.
What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.
The distance between three consecutive crests of wave is 60 cm. If the waves are produced at the rate of 180/ min, calculate:
- wavelength
- time period
- wave velocity.
A person hearing at one end of a long metal bar hears two distinct sounds when the other end is struck with a stone. Explain, giving scientific reasons
Define one hertz.
Vibration of object produces ______.
What types of medium are required for sound to travel?
