In order to produce several visible interference fringes from two narrow slits using light of a single wavelength,the distance between the slits must be of the order
A)of a few tenths of the wavelength.
B)of a few wavelengths.
C)of a few tens wavelengths.
D)of a few hundreds wavelengths.
E)The distance does not matter.

Question

Quizplus · Accepted Answer

For visible interference fringes to be produced from two narrow slits using light of a single wavelength, the distance between the slits must be of the order of a few wavelengths. This allows for constructive and destructive interference patterns to form, which are observable as fringes.

In Order to Produce Several Visible Interference Fringes from Two