Question on: WAEC Physics - 1997
A progressive wave has a wavelength of 50cm. calculate the phase difference between two points at a distance of 20cm apart.
A
10/3π
B
5/2 π
C
4/5 π
D
2/3 π
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Correct Option: C
Phase difference = \(\frac{2\pi x}{\lambda}\)
= \(\frac{2\pi \times 20}{50}\)
= \(\frac{4}{5} \pi\)
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