Question

In YDSE, intensity at two sources are in ratio of \(1: 9\). if source are incoherent then intensity at central point is \(I_1\), and if sources are coherent (and phase differs by \(60°\)) then intensity at central point is \(12\) then \(\frac{I_1}{I_2}\) is

• A. \(\frac{10}{13}\)
• B. \(\frac{5}{13}\)
• C. \(\frac{8}{13}\)
• D. \(\frac{7}{11}\)

Answer 1

The Correct Option is A

Option (A) is \(\frac{10}{13}\)