Question

The equation of a progressive wave is Y-0.4 Sin2nt/0.02 - X/60) where x is in cm. The
phase difference between two points separated by 3 cm at any instant is​

Answer 1

Answer:

Phase difference ΔΦ = k Δx

k is the wave number = 2π/λ

Δx is path difference between two points

Comparing the given equation

Y = 0.4sin(2πt/0.02 - x/60)

with general equation

y = Asin(wt - kx)

k = 1/60

ΔΦ = k Δx = (1/60)*(3cm) = 1/20 radians

ΔΦ = 0.05 radians