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Tardigrade
Question
Physics
A stationary wave is represented by y=A sin (100 t) cos (0.01 x ), where y and A are in millimetres, t is in seconds and x is in metres. The velocity of the wave is
Q. A stationary wave is represented by
y
=
A
sin
(
100
t
)
cos
(
0.01
x
)
, where
y
and
A
are in millimetres,
t
is in seconds and
x
is in metres. The velocity of the wave is
6640
238
AIPMT
AIPMT 1994
Waves
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A
1
0
4
m
/
s
65%
B
not derivable
12%
C
1
m
/
s
15%
D
1
0
2
m
/
s
8%
Solution:
Velocity of wave
v
=
coefficient of
t
/
coefficient of
x
=
100/.01
=
1
0
4
m
/
s