Time taken by the light to travel through x cm of air. R.I. of glass i

1.	Time taken by the light to travel through x cm of air. R.I. of glass is 1.5, then x is
Answer» 7.5 cm 1.33 cm 9 cm 6 cm Solution :`d_(G) = 5CM, d_(a) x cm, t_(g) = t_(a), mu_(g) = 1.5, x = ?` When TIME is same then `mu_(g) = (d_(a))/(d_(g))` `:. d_(a) = mu_(g) xx d_(g) = 1.5 xx 5 = 7.5 cm`

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Time taken by the light to travel through x cm of air. R.I. of glass is 1.5, then x is

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