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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
White light is passed through a prism whose angle is $5^o $. If the refractive indices for rays of red and blue colour are respectively $1.64$ and $1.66,$ the angle of deviation between the two colours will be.....$^o$
  • ✓
    $0.1$ 
  • B
    $0.2$ 
  • C
    $0.3$
  • D
    $0.4$
✓

Answer

Correct option: A.
$0.1$ 
a
(a) $\theta  = ({\mu _v} - {\mu _r})A = 0.02 \times {5^o} = {0.1^o}$

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