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Wave Optics — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
From Brewster's law, except for polished metallic surfaces, the polarising angle
  • ✓
    depends on wavelength and is different for different colours
  • B
    independent of wavelength and is different for different colours
  • C
    independent of wavelength and is same for different colours
  • D
    depends on wavelength and is same for different colours
✓

Answer

Correct option: A.
depends on wavelength and is different for different colours
(a) : From Brewster's law $i_p=\tan ^{-1}(\mu)$ i.e., the polarising angle depends on refractive index and hence on wavelength and therefore is different for different colours.

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