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9. Ray optics abd optical instruments — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics9. Ray optics abd optical instruments1 Mark
MCQ
Speed of light is maximum in
  • A
    Water
  • ✓
    Air
  • C
    Glass
  • D
    Diamond
✓

Answer

Correct option: B.
Air
b
( b)$v \propto \frac{1}{\mu }$, $\mu$ is smaller for air than water, glass and diamond.

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