In a Young’s double slit experiment, the path difference at a certain point on the screen…………..

Class 12th Physics, Question -In a Young’s double slit experiment, the path difference at a certain point on the screen between two interfering waves is 𝟏 𝟖 th of the wavelength. The ratio of intensity at this point to that at the centre of a bright fringe is close to

These are the options for the question :In a Young’s double slit experiment, the path difference at a certain point on the screen between two interfering waves is 𝟏𝟖th of the wavelength. The ratio of intensity at this point to that at the centre of a bright fringe is close to

(i) 0.80
(ii) 0.74
(iii) 0.94
(iv) 0.85

The correct answer is -(iv) 0.85