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Class 11 NEET Physics Waves Questions Questions
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© examsnet.com
Question : 48
Total: 91
A transverse wave propagating along
x
-axis is represented by
y
(
x
,
t
)
=
8.0
sin
(
0.5
π
x
−
4
π
t
−
π
4
)
where
x
is in metres and
t
is in seconds. The speed of the wave is
(2006)
8
m
∕
s
4
π
m
∕
s
0.5
π
m
∕
s
π
4
m
∕
s
Validate
Solution:
y
(
x
,
t
)
=
8.0
sin
(
0.5
π
x
−
4
π
t
−
π
4
)
Compare with a standard wave equation,
y
=
a
sin
(
2
π
x
λ
−
2
π
t
T
+
ϕ
)
we get
2
π
λ
=
0.5
π
or,
λ
=
2
π
0.5
π
=
4
m
2
π
T
=
4
π
or,
T
=
2
π
4
π
=
1
2
sec
.
v
=
1
T
=
2
H
z
Wave velocity,
v
=
λ
v
=
4
×
2
=
8
m
∕
s
e
c
.
© examsnet.com
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