The optical path of a monochromatic light is the same if it travels through 4 cm of glass or 4.5 cm of water . If the refractive index of galss is 1.5
The optical path of a monochromatic light is the same if it travels through 4 cm of glass or 4.5 cm of water . If the refractive index of galss is 1.5, then the refractive index of water is
A. 1.2
B. 1.33
C. 1.42
D. 1.46
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Correct Answer - B
Optical path `=n_1 d_1=n_2d_2 `
`:. 1.5 xx 4=4.5 xx n_2 " " :. n_2=(6)/(4.5)=1.33 `
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