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NEET 2007
Exam
NEET
Year
2007
Subject
Physics
Chapter
Ray Optics

NEET 2007 · Physics · Ray Optics

The frequency of a light wave in a material is 2 × 10^ 14 ~Hz and...

The frequency of a light wave in a material is 2×1014 Hz2 \times 10^{14} \mathrm{~Hz} and wavelength is 5000A˚5000 Å. The refractive index of material will be.

Options

  1. A1.50
  2. B3.00
  3. C1.33
  4. D1.40

Correct answer

B. 3.00

Step-by-step solution

Refractive index μ=CV=CVλ\mu=\frac{C}{V}=\frac{C}{V \lambda} =3×1082×1010×5000×10−10=3=\frac{3 \times 10^8}{2 \times 10^{10} \times 5000 \times 10^{-10}}=3
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