Answer to Question #74811 in Physics for Ayrill

Question

1. In Young’s double-slit experiment, what happens to the spacing between the fringes if
(a) the slit separation is increased?
(b) the wavelength of the incident light is decreased?
(c) if the distance between the slits and the viewing screen is increased?

2. In Young’s double-slit experiment, how would the interference pattern change if white
light is used?

3. Explain why the light from the two headlights of a distant car does not produce an
interference pattern.

4. What happens to the width of the central maximum in a single-slit diffraction if the slit
width is increased?

5. In a single-slit diffraction, what happens to the intensity pattern if the slit width
becomes narrower and narrower?