Advertisements
Advertisements
प्रश्न
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
विकल्प
water
wax
vacuum
empty vessel
Advertisements
उत्तर
Sound waves cannot propagate through vacuum.
(c) Vacuum.
APPEARS IN
संबंधित प्रश्न
What is the name of the strings which vibrate in our voice box when we talk?
A tuning fork has a number 256 marked on it. What does this number signify?
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
If 20 waves are produced per second, What is the frequency is hertz?
How is sound produced? Explain with the help of an example.
Draw the sketches of two waves A and B such that wave A has twice the wavelength and half the amplitude of wave B.
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one :
(a) having on fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
The region in a sound wave, with higher pressure and density, is called ______ and that with low pressure and density is called ______.
Describe an experiment to show that sound cannot travel through vaccum.
