Question

The path difference between two interfering
waves at a point on screen is 29 times the
wavelength. Is the point dark or bright? If the
path difference is 1.16 x 10 m, then
wavelength of the light is
(A) Dark, 4000 Å (B) Bright, 4000 Å
(C) Bright, 8000 Å (D Dark, 8000 Å
(10​

Answer 1

Answer:

This is your answer:

In path the difference 2waves is intergrall multiple of wave length, which satisfefic condition for consructive interference..

I hope I will help you....