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Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
Huygens principle of secondary waves:
  • A
    Allow us to find the focal length of a thick convex lens.
  • B
    Give us the magnifying power of the microscope.
  • ✓
    Is a geometrical method to find, the position of a wave front.
  • D
    Is used to determine the velocity of light.
✓

Answer

Correct option: C.
Is a geometrical method to find, the position of a wave front.

Huygens's Principle states that every point on a wavefront is a source of secondary wavelets, which spread forward at the same speed.
Thus is enables to find the position of wavefront.

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