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Wave Optics question

2007 · Q121
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Wave Optics question

2007 · Q121

NEETPhysicsWave OpticsMCQ+4 / −1
The frequency of a light wave in a material is 2 ×\times× 1014 Hz and wavelength is 5000 A∘\mathop A\limits^ \circA∘​. The refractive index of material will be
  1. A
    1.50
  2. B
    3.00
  3. C
    1.33
  4. D
    1.40
View written solutionFree

Correct answer: B

By using v = nλ\lambda λ

∴\therefore∴ v = 2 ×\times× 1014 ×\times× 5000 ×\times× 10-10 = 108 m/s

Refractive index of the material,

μ\mu μ = cv{c \over v}vc​ = 3×108108{{3 \times {{10}^8}} \over {{{10}^8}}}1083×108​ = 3

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