Question

Why monochromatic light is used in Newton’s ring?

Answer 1

Newton's ring:

1. The intrusion pattern connecting two surfaces created by light reflecting between them is said to form Newton's Rings.
2. On respective sides of the spherical, there are two flat surfaces. When observed in monochromatic light, Newton's Rings appear as changing bright and dark circles at the position of interaction joining the two surfaces.
3. When viewed in white light, the distinct wavelengths of light collide at a very discrete extent of thickness in the surface of air between the two surfaces. As a consequence, a coaxial circle of a band of colors, a rainbow emerges.

1. Dark circles can be seen in the photograph. They are dark because destructive light interference occurs in certain places. The wavelength specifies the sites at which this scattering occurs. White light is made up of seven different wavelengths spanning from 400 to 700 nanometers. Simply said, every light with a distinct wavelength will produce a dark circle with a varied radius. Fringes will overlap and no clear fringe will be visible as a result. The Newton's Ring is a tool that can be used to calculate a variety of values. What's the purpose of experimenting if you can't see them?
2. There will be no interference if you don't use a monochromatic (ideally sodium) light beam. The first and most important condition for interference is that the participating beams are not 180° out of phase; otherwise, there will be no peaks or troughs to notice.