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Wavefronts - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

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  • 5 Questions around this concept.

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What is the type of the wavefront on earth for sunlight?

Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. What is the nature of the wavefronts emerging from the final image?

Concepts Covered - 1

Wavefronts

Light also shows the wave nature.  According to Huygens, each point source of light is a center of disturbance from which waves spread in all directions.

Wave front- 

  • The locus of all particles in a medium, vibrating in the same phase is called WaveFront (WF).
  • The direction of propagation of light is perpendicular to the WF.
  • The time taken by the light to travel from one wavefront to another is the same along any ray.
  •  The phase difference between various particles on the wavefront is zero.
  • Various type of wavefront-  
  1. Spherical WF- For a point source
  2. Cylindrical WF- For line source
  3. Plane WF- For parallel light rays 

 

 

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Wavefronts

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