Physics-
General
Easy
Question
The diagram below shows an instantaneous position of a string as a transverse progressive wave travels along it from left to right Which one of the following correctly shows the direction of the velocity of the points 1, 2 and 
on the string
1 2 3
- → → →
- → ← →
- ↓ ↓ ↓
- ↓ ↑ ↓
The correct answer is: ↓ ↑ ↓
Particle velocity 
Slope of the graph at that point
At point 1 : Slope of the curve is positive, hence particle velocity is negative or downward 
At point 2 : Slope negative, hence particle velocity is positive or upwards 
At point 3 : Again slope of the curve is positive, hence particle velocity is negative or downward 
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