Question

(
c
)
Air
inside
the
columns
of
instruments
like
flute
is
made
to
vibrate
to
produce
sound
.
They
are
called
'
wind
instruments
'
.
Give
the
names
of
four
other
such
instruments
.
does
this
tell
you
about
the
relative
speed
of
sound
in
air
and
solid
.
(
d
)
Why
do
we
take
our
ears
close
to
the
railway
track
to
find
if
the
train
is
approaching
?
What
63
Ans.
(a)
(c)
(b)
(d)
Ans.
solid.
Ans.
(e) Why is radio used on the moon to communicate?
Ans.
(f) What is the role of the eardrum in our hearing?
(g) How are time period and frequency of a vibration related to each other?
Ans.
(h) The string of a sitar makes 3, 000 vibrations in 6 seconds. Find the time period and frequency
of the sound produced by it.
Ans.​

Answer 1

Answer:

please write it in para nicely i can then answer you correctly

Explanation:

Answer 2

Explanation:

you have written questions in such a bad way

write it in paragraph form

so that we can see your questions properly and answer

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