The frequency of light wave in a material is 2 × 10 14 Hz and wavelength is 5000 Å. The refractive index of material will be :
Text Solution
Verified by ExpertsThe correct answer is:
C
Velocity of light waves in material is
v = n λ ...(i)
Refractive index of material is
μ = 
...(ii)
where c is speed of light in vacuum or air.
or μ = 
...(iii)
Given , n = 2 × 10 14 Hz
λ = 5000 Å = 5000 × 10 –10 m
c = 3 × 10 8 m/s
Hence, from Eq. (iii), we get
μ = 
= 3.00
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