Discover the World of Refractive Index with Newton's Rings Apparatus

Have you ever wondered how to determine the index of refraction using Newton's Rings apparatus?

When a liquid is introduced into the air space between the lens and the plate in a Newton's-rings apparatus, the diameter of the tenth ring changes from 1.60 mm to 1.32 mm. Find the index of refraction?

Exploring the Refractive Index with Newton's Rings

The question refers to the change in refraction in a Newton's Rings apparatus when a liquid is introduced. We can use Snell's law, taking into account the given change in diameters of the diffraction rings, to determine the unknown refractive index of the liquid.

Newton's Rings apparatus is a fascinating tool to study and understand the concept of refractive index in optics. When a liquid is introduced between the lens and the plate, it affects the interference pattern of the diffraction rings, leading to changes in their diameters.

To find the index of refraction of the liquid, we can apply Snell's law, which relates the angles of incidence and refraction to the refractive indices of the media involved. By analyzing the changes in the ring diameters from 1.60 mm to 1.32 mm, we can calculate the refractive index of the liquid.

It's important to note that the refractive index can vary slightly with the wavelength of light, but for the purpose of this calculation, we can assume it to be constant. Understanding how refractive index affects light propagation is key to many applications in optics and beyond.

By delving into the world of Newton's Rings and refractive index determination, we gain valuable insights into the behavior of light in different media and the principles of optics. Explore more about the fascinating topic of Refractive Index to deepen your understanding of light interaction and refraction.