A transverse wave is travelling along a string from left to right. Given figure represents the shape of the string at an instant. Choose the wrong statement for that instant.
, and 
have positive velocity in upward direction 
and 
have negative velocity in downward direction 
and 
have zero velocity 
and 
have minimum velocity
Text Solution
Verified by ExpertsD
Particle velocity, 
or 
wave velocity 
slope of the wave
For upward velocity, 
, so slope must negative. Points 
, and 
have negative slope.
For downward velocity, 
, so slope must be positive which is at the points 
, and 
.
For zero velocity, slope must be zero which is at 
and 
.
For maximum magnitude of velocity, 
slope 
maximum, At point 
and 
, the angle ( 
) made by tangent from horizontal is maximum, i.e., magnitude of 
is maximum at 
and 
.
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