Question

Two point on a plane wavefront corresponding to ` lambda=5000 Å` are separated by a distance of 2mm. What is the phase difference between those points?
A. `(pi)/2 ` radian
B. Zero
C. `(2pi)/(lambda)(2 xx 10^(-3))` radian
D. `pi` radian

Answer 1

Correct Answer - B
All points on a wave front are in the same phase .
`:.` The phase difference between any two points is zero .