Question

Sunlight falls perpendicularly on a double slit, each 3 mm wide and 12 mm apart. If a screen is placed at a distance of 1 m, and considering that it only receives light from the two slits, what can we observe on the screen?

a) A diffraction pattern
b) Two bright dots
c) An interference pattern
d) An interference pattern superimposed upon the diffraction pattern

Answer 1

Explanation: We can observe on the screen - c) An interference pattern.

When Sun passed through a single slit in a screen , it produces coherence light. This light is then projected onto another screen that has twin or double slits, which again diffracts the incident illumination as it passes through.

The result of interference between the diffracted light beams can be visualized as light intensity distributions on the film. Distance Between Slits can be utilized to vary the distance between the slits and produce corresponding variations in the interference intensity distribution patterns.