Explain the rectilinear propagation of light?

• The property of light traveling in a straight line is called the rectilinear propagation of light.
• A light source can be seen only if there is a straight-line path between the source and our eyes.
  Examples:
  1) Sun rays entering a dark room through a small opening appear to travel in a straight line.
  2) Light from torch, headlights of cars, etc. appears to travel in a straight line.
  3) Light from a projector travels in a straight line in the form of light rays towards the screen.
  4) Light emitted from a laser pointer appears to travel in a straight line.

   

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Updated on: 10-Oct-2022

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