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NCERT Exemplar Solutions Class 9 Science Solutions for Sound - Exercise in Chapter 12 - Sound
Question 1 Sound - Exercise
The note is a sound
(a) of a mixture of several frequencies
(b) of a mixture of two frequencies only
(c) of a single frequency
(d) always unpleasant to listen
Answer:
Answer is (a) of mixture of several frequencies
Explanation:
Sound is a mixture of several frequencies which can be produced by vibrating objects.
Video transcript
"hello everyone welcome to lido learning
i am gurpreet
your science tutor today's question is
a note is a sum a
of a mixture of several frequencies b
of a mixture of two frequencies only c
of a single frequency or d always
unpleasant to listen so the four options
have been given to you
and we have to find out the correct
option for the note
is a sum so
let's start our answer sound
is a mixture of
several frequencies
which can be
produced
by vibrating objects
so from this definition of sound
the correct option for the question will
be
option a that is a note is a sound
of a mixture of several frequencies
for more such videos please subscribe
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and for any doubts drop a comment thank
you"
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