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Wave Optics — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
Ray optics is valid when characteristic dimensions are:
  • A
    Of the same order as the wavelength of light
  • B
    Much smaller than the wavelength of light
  • C
    Much larger than the wavelength of light
  • D
    Of the order of 1mm
✓

Answer

  1. Much larger than the wavelength of light

Explanation:

Ray optics is valid when characteristics dimensions are larger than the wavelength of the light, so that rectilinear property of light can be used.

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