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Byju's Answer
Standard IX
Physics
Time Period
Derive the re...
Question
Derive the relation between the velocity of wave, wavelength and frequency.
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Solution
Frequency wavelength and wave velocity are related as follows:
Wave length is the distance travelled by the wave during the time a particle of the medium completes one vibration.
Therefore, if
λ
be the wavelength and
T
the time period then the wave travels a distance
λ
and time
T
Hence,
Wave velocity
=
D
i
s
t
a
n
c
e
T
i
m
e
⇒
v
=
λ
T
∴
v
=
ν
λ
[
1
T
=
f
r
e
q
u
e
n
c
y
(
ν
)
]
∴
Wave velocity
=
Frequency
×
Wavelength
The wave velocity in a medium remains constant under the same physical condition.
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