Question

A phase difference of $\pi /3$ exists between two points in a wave, whose wavelength is $\pi$ metres. The corresponding path difference will be

• A. $\pi /6$
• B. $\pi /3$
• C. $\pi /2$
• D. $\pi$

Answer 1

The correct option is A $\pi /6$

phase difference = $\left(2\pi /\lambda \right)\times$ path difference
Thus, path difference $=\left[\pi /\right(2\pi \left)\right]\times \left(\pi /3\right)=\pi /6$
The correct option is (a)