A light wave enters from air into a medium of refractive index 1.5. The speed of light in the medium will be
A light wave enters from air into a medium of refractive index 1.5. The speed of light in the medium will be
A. `2 xx 10^(8)m//s`
B. `4.5 xx 10^(8) m//s`
C. `9 xx 10^(8) m//s`
D. `(330//1.5) xx 10^(8) m//s`
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Correct Answer - A
`v_(m) = (v_(a))/(mu_(m)) = (3 xx 10^(8))/(1.5) = 2 xx 10^(8) m//s`
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