Waves - Result Question 19
19. Two sound waves having a phase difference of $60^{\circ}$ have path difference of
(a) $2 \lambda$
(b) $\frac{\lambda}{2}$
(c) $\frac{\lambda}{3}$
(d) $\frac{\lambda}{6}$
[1996]
Show Answer
Answer:
Correct Answer: 19. (d)
Solution:
- (d) Phase difference $=60^{\circ}=\frac{\pi}{3}$
Path difference $=\frac{\lambda}{2 \pi}$ (phase diff.)
$=\frac{\lambda}{2 \pi} \times \frac{\pi}{3}=\frac{\lambda}{6}$
