Answer to Question #7963 in Optics for Dr R K Mangal

Question #7963

why newton's rings are circular

Expert's answer

The phenomenon of Newton's rings is an interference pattern caused by the reflection of light between two surfaces - a spherical surface and an adjacent flat surface.

The brightness or darkness depends on the height of air column between the spherical surface and the adjacent flat surface.

The locus of all points on the flat surface which are having the same height of air column is a circle whose center is the center of contact of the two surfaces.

Hence light reflected from all these points will have the same brightness. Thus it forms a ring of equal brightness.
The points where there destructive interference takes place are lying in a circle and hence dark ring is formed.

Comments

Assignment Expert

12.11.13, 17:53

You're welcome. We are glad to be helpful.
If you really liked our service please press like-button beside answer field. Thank you!

ujjwal mishra

11.11.13, 17:46

thanks sir your answer is best

Assignment Expert

18.04.13, 17:28

You're welcome. We are glad to be helpful.
If you really liked our service please press like-button beside answer field. Thank you!

sr

18.04.13, 14:57

thanks

Leave a comment

Ask Your question

Related Questions

How to cram for an exam in a week
You see it in front of you. Holiday Ham. Eggnog. Presents underneath the tree. Mariah Carey’s “All I want for…
Should Students Have Homework and Why
There’s a shortlist of things students absolutely loathe, no matter what major you’re in or which Universities or High Schools…
How to Write the Greatest Essay You’ve Ever Written
Writing is a recipe where we share our thoughts and ideas, guiding the readers along for the experience we are…