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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2007
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Q)

The frequency of a light wave in a material is $2 \times 10^{14}$ Hz and wavelength is $5000$ Å. The refractive index of material will be:-


( A ) 1.5
( B ) 3
( C ) 1.33
( D ) 1.4

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