Advertisements
Advertisements
प्रश्न
A list of mediums is given below.
- wood
- water
- air
- vacuum
In which of these mediums can sound travel?
पर्याय
i & ii only
i, ii & iii only
iii & iv only
ii, iii & iv only
Advertisements
उत्तर
i, ii & iii only
Explanation:
Sound requires any medium to travel but in vacuum there is no medium, so sound cannot travel through them.
APPEARS IN
संबंधित प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
How can the pitch of sound produced in a piano be changed ?
Which wave property determines pitch?
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
When we change a feeble sound to a loud sound, we increase its :
How does the velocity of a wave vary with temperature?
The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms-1, calculate:
- no. of waves produced in one second
- time required to produce one wave.
A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:
- frequency of node produced.
- speed of sound, if wavelength is 1.05 m.
- what will be the effect when the speed of cog wheel is doubled?
What is the ratio of speed of light to speed of sound?
Unwanted sounds are called ______.
