) The refractive index oi ethyl alchohal  carbon disulfide  and water are 1 _ 36. 1.63 and _ 33 respective*. tn which medium wit' Eight travel the fastest? (Speed of light in air = 3 rn;s} Answer Speed of fight in air Refractive index Of ethyl alcohol Speed light in alcohol Spccd 01' light in ethyl alcohol Hence. speed of light in alcohol =

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