Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

3,167.

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

E.

π/3

Correct answer is C

Phase difference = \(\frac{2\pi x}{\lambda}\)

= \(\frac{2\pi \times 20}{50}\)

= \(\frac{4}{5} \pi\)