Ncert Exercises & Solutions

For the harmonic travelling wave, $y = 2 \cos 2 π (10 t - 0.008 x + 3.5)$ where x and y are in cm and t is in second. What is the phase difference between the oscillatory motion at two points separated by a distance of:

1. 4m

2. 0.5m

3. $\frac{λ}{2}$

4. $\frac{3 λ}{4}$ (at a given instant of time)

5. What is the phase difference between the oscillation of a particle located at x=100cm, at t = T sec and t=5 sec?

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