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Byju's Answer
Standard XII
Physics
Phase Difference
Two waves are...
Question
Two waves are given as
y
1
=
3
A
cos
(
ω
t
−
k
x
)
and
y
2
=
A
cos
(
3
ω
t
−
3
k
x
)
. Amplitude of resultant wave will be __________.
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Solution
y
1
=
3
A
c
o
s
(
w
t
−
k
x
)
y
2
=
A
c
o
s
(
w
t
−
3
k
x
)
As both waves are in the same phase and moving in same direction so resultant amplitude will be added directly
A
n
e
t
=
3
A
+
A
A
n
e
t
=
4
A
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