JEE Main 2019 Physics question

In a Young's double slit experiment, the path difference, at a certain point on the screen, between two interfering waves is th of wavelength. The ratio of the intensity at this point to that at the centre of a bright fringe is close to:

• (A)0.94
• (B)0.85Correct
• (C)0.74
• (D)0.80