The refractive index of glass is 1.50 and the speed of light in air is 3x 100 m/s. Calculate the speed of light in glass.
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3
Answer:
3.3×10^-7 m
Explanation:
The speed of light in air is c = 3 × 10⁸ m/s.
Thus, the speed of light in glass will be given as.
v = c/n = 3 × 10⁸/ 1.5 = 2 × 10⁸ m/s.
The speed, wavelength and frequency are related as.
c = νλ
Thus, wavelength in air is given as.
λa = c/ν = 3 × 10⁸/ 6 × 10¹⁴ = 5 × 10-⁷ m.
Similarly, the wavelength in glass is given as
λg = v/ν = 2 × 10⁸/ 6 × 10¹⁴ = 3.3 × 10-⁷ m.
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Answer:Refractive index = velocity of light in vaccuum/velocity of light in medium
1.50= 3*10^8/v
v = 2*10^8 m/s
Explanation:
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