Advertisements
Advertisements
प्रश्न
Write the approximate value of the speed of sound in air.
Advertisements
उत्तर
The speed of sound in air = 340 ms−1
APPEARS IN
संबंधित प्रश्न
A wire of length 80 cm has a frequency of 256 Hz. Calculate the length of a similar wire under similar tension, which will have frequency 1024 Hz
State the use of echo by a bat, dolphin and fisherman.
Name the waves which are used in sonar to find the depth of a sea. Give one reason for their use.
The following diagram shows three ways in which the string of an instrument can vibrate.
(a) which of the diagram shows the principal note?
(b) which has the frequency four times that of the first?
(c) what is the ratio of the frequency of the vibration in (i) and (ii)?
What is the shape of a soundboard kept behind the speaker on the stage of a big hall ?
What are mechanical waves?
Write the approximate value of the speed of sound in iron.
Why will an echo not be heard when the distance between the source of the sound and the reflecting surface is 10 m?
State two factors on which the natural frequency of a body depends.
