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Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
A wavefront is an imaginary surface where:
  • A
    Phase is same for all points.
  • B
    Phase changes at constant rate at all points along the surface.
  • C
    Constant phase difference continuously changes between the points.
  • D
    Phase changes all over the surface.
✓

Answer

  1. Phase is same for all points.

Explanation:

The locus of all particles in a medium, vibrating in the same phase is called wave front.

The direction of propagation of light (ray of light) is perpendicular to the wave front.

A wave front is an imaginary surface where all particles lying on this vibrate in the same phase.

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