(A) In a progressive wave, the phase diffe rence between two particles of a medium having a path difference `lambda` is `2pi`
(R): The phase difference is directly propor tional to path difference between particles in progressive wave

Options

A. Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.
B. Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
C. A' is true and 'R' is false
D. Both 'A' and 'R' are false

Answer

B