Optical fibre: acceptance angle, numerical aperture and dispersion
Launch light into a step-index fibre; rays inside the acceptance cone are guided by total internal reflection and others leak.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 9. Ray Optics and Optical Instruments |
| NCERT section | 9.3 |
| Level | NEET level |
| Time | about 12 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: optical fibre · total internal reflection · numerical aperture · acceptance angle
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- Compound microscope and telescopes
- Concave and convex mirrors: image formation
- Prism: deviation curve and dispersion
- Rainbow: refraction and internal reflection in a water drop