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Q)
The wave described by
y
=
0.25
sin
(
10
π
x
−
2
π
t
)
,
where x and y are in meters and t in seconds, is a wave travelling along the :
(1)
−
v
e
x
dirextion with amplitude 0.25 m and wavelength
λ
=
0.2
m
(2)
−
v
e
x
direction with frequency 1 Hz
(3)
+
v
e
x
direction with frequency
π
Hz and wavelength
λ
=
0.2
m
(4)
+
v
e
x
direction with frequency 1 Hz and wavelength
λ
=
0.2
m
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