Question

Interference is produced with two coherrent sources of same intensity. If one of the source is covered with a thin film so as to reduce the intensity of light coming out of it to half,

• A. Bright fringes will be less bright and dark fringes will be less dark
• B. Bright fringes will be more bright and the dark fringes will be more dark
• C. Brightness of both types of the fringes will be same (General illumination)
• D. None of the above will occur.

Answer 1

Answer: (A)

Bright fringes will have less light and dark fringes will have more light.