Light travells from turpentine oil into glass , if the velocity of light in glass is 2x10^8 then find speed of light in turpentine .( Refractive index of glass is 1.5 and that of turpentine is 1.47 )

Open in App

Solution

Dear student,

$T h e a b s o l u t e r e f r a c t i v e i n d e x o f a m e d i u m i s : η = \frac{s p e e d o f l i g h t i n v a c u u m}{s p e e d o f l i g h t i n t h e m e d i u m} G i v e n, t h e r e f r a c t i v e i n d e x o f g l a s s i s η_{1} = 1.5 s p e e d o f l i g h t i n g l a s s (v_{1}) = 2 \times 10^{8} r e f r a c t i v e i n d e x o f t u r p e n t i n e η_{2} = 1.47 s p e e d o f l i g h t i n t u r p e n t i n e (v_{2}) = ? s o, \frac{n_{1}}{v_{1}} = \frac{n_{2}}{v_{2}} v_{2} = \frac{n_{2} \times v_{1}}{n_{1}} = \frac{1.47 \times 2 \times 10^{8}}{1.5} = 1.96 \times 10^{8} m / s S o, t h e s p e e d o f l i g h t i n t u r p e n t i n e i s 1.96 \times 10^{8} m / s$
Regards

Suggest Corrections

Similar questions

When light enters normally into turpentine oil ( $μ = 1.47)$ from water, its speed ________ .

You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table.

Material mediumRefractive indexMaterial mediumRefractive indexAir1.0003Canada Balsam1.53Ice1.31−−Water1.33Rock salt1.54Alcohol1.36−−Kerosene1.44Carbon disulphide1.63Fused quartz1.46Dense flint glass1.65Turpentine oil1.47Ruby1.71Benzene1.50Sapphire1.77Crown glass1.52Diamond2.42

Join BYJU'S Learning Program