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Apni Physics helps students and educators learn physics in a simple, visual, and conceptual way. Explore Experiments Viva, Quizzes and Research Analysis, lessons on mechanics, optics, electricity, and quantum physics with real-life examples.

Total Internal Reflection- Optical Fiber

  • Post author:Dr Sushil Kumar
  • Post published:26/09/2018
  • Post category:Class Notes
  • Post comments:0 Comments
  • Post last modified:04/03/2026
  • Reading time:2 mins read

Ray Theory Transmission Let's see what happens when a light ray encounters a boundary separating two different media? In the figure given below, n1 and n2 are the refractive indices…

Continue ReadingTotal Internal Reflection- Optical Fiber

Basic Introduction of Optical Fiber- Refractive Index

  • Post author:Dr Sushil Kumar
  • Post published:24/09/2018
  • Post category:Class Notes
  • Post comments:1 Comment
  • Post last modified:22/02/2026
  • Reading time:2 mins read

Some of the questions that arise about the optical fibers (OF) are: What is the structure of an optical fiber? How does light propagate along a fiber? What materials are…

Continue ReadingBasic Introduction of Optical Fiber- Refractive Index

Get Strong to be Involved in Phases of Life

  • Post author:Dr Sushil Kumar
  • Post published:24/09/2018
  • Post category:Students Life
  • Post comments:1 Comment
  • Post last modified:23/02/2026
  • Reading time:3 mins read

One student needs 1-2 marks to get full out of total marks, while another one needs same marks to get the passing marks. Same pain both sides with different feelings, one…

Continue ReadingGet Strong to be Involved in Phases of Life
importance of love

Importance of Love Being Friendly with the Students

  • Post author:Dr Sushil Kumar
  • Post published:21/09/2018
  • Post category:Students Life
  • Post comments:1 Comment
  • Post last modified:03/11/2019
  • Reading time:3 mins read

Being Friendly When you are with students in the science lab of your school/university then you have an opportunity to interact with them more friendly. Here you demonstrate the experiments…

Continue ReadingImportance of Love Being Friendly with the Students
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