Newton's rings: radius of curvature and wavelength
See dark and bright rings from an air film under a plano-convex lens; D_n^2 grows linearly with n and gives R or lambda.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 10. Wave Optics |
| NCERT section | 10.4 |
| Level | NEET level |
| Time | about 14 minutes |
| Access | Included in a PractiSci plan |
What you do in the lab
Change the controls and watch the physics behave in real time in 3D. Live readouts and graphs show the numbers behind it, and the Learn tab has the theory, procedure, observations and viva questions. Works on a phone or a laptop, in English and Hindi.
Topics: Newton rings · interference · air film · radius of curvature · JEE practical
More from this chapter
- Diffraction grating: orders, dispersion and resolving power
- Fresnel biprism: fringe width and wavelength
- Huygens' principle: reflection and refraction of wavefronts
- Polarisation, Malus' law and Brewster angle
- Resolving power and the Rayleigh criterion
- Single slit diffraction
- Thin film interference: soap film, oil film and anti-reflection coating
- Young's double slit experiment