Duration: 2:41

0 views

0

In the adjacent diagram, \( C P \) represents a wavefront and \( A O \) and \( B P \), the corresponding two rays. Find the condition on \( \theta \) for constructive interference at \( P \) between the ray \( B P \) and reflected ray \( O P \) :
Figure 6.108
(A) \( \cos \theta=\frac{2 \lambda}{2 d} \)
(B) \( \cos \theta=\frac{\lambda}{4 d} \)
(C) \( \sec \theta-\cos \theta=\frac{\lambda}{d} \)
(D) \( \sec \theta-\cos \theta=\frac{4 \lambda}{d} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live