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NCERT Exemplar Solutions Class 9 Science Solutions for Sound - Exercise in Chapter 12 - Sound
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Sound travels in air if
(a) particles of medium travel from one place to another
(b) there is no moisture in the atmosphere
(c) disturbance moves
(d) both particles as well as disturbance travel from one place to another.
Answer:
The answer is (c) disturbance moves
Explanation:
Sound waves propagate by vibrating in its own position. Whereas disturbance created by the vibration of particles moves from one place to another.
Video transcript
"hello everyone welcome to leader
learning
i am good pre your science tutor
today's question is sound travels
in air if
a particles of medium travel from one
place to another
v there is no moisture in the atmosphere
c disturbance moves
or d both particles as well as
disturbance
travel from one place to another so out
of the four options we have to find out
that which is the correct one when the
sound travels in
air so let's start our answer
when sound waves propagate
when sound waves
propagate by
vibrating
in its own position
whereas
disturbances
creates
created by the vibration
of particle
move from one place to another
place to another
hence the correct option
for this question will be option
c that is disturbances moves
for more such videos please subscribe
leader learning
and for any doubts drop a comment thank
you"
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