Question
Physics Question on Wave optics
In a Young's double slit experiment which of the following statements is NOT true?
Angular separation of the fringes remains constant when the screen is moved away from the plane of the slits.
Fringe separation increases when the separation between the two slits decreases.
Sharpness of the fringe pattern decreases when the source slit width increases.
Distance between the fringes decreases when the separation between slits and the Screen increases.
The central fringe is white when the monochromatic source is replaced by a white light source.
Distance between the fringes decreases when the separation between slits and the Screen increases.
Solution
The correct answer is (D): Distance between the fringes decreases when the separation between slits and the Screen increases.