Advertisements
Advertisements
प्रश्न
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?
उत्तर
(a) Z medium has no fixed shape and no fixed volume.
(b) W medium has a fixed volume but no fixed shape.
(c) Y medium has the same composition as that on the moon.
(d) X medium has a fixed shape and a fixed volume.
APPEARS IN
संबंधित प्रश्न
Describe an experiment to estimate the speed of sound in air.
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
Name the physical qantity whose SI unit is 'hertz'.
What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
A tuning fork has a number 256 marked on it. What does this number signify?
Which of the following vibrates when a musical note is produced by the cymbals in an orchestra?
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 ______.
Different sound notes have different ______.
