Question

light enters from air into diamond which has refractive index of 2.82.Calculate the speed of light in diamond.The speed of light in air is 3×10*8m/s

Answer 1

we know that ,
speed of light in air/speed of light in diamond = refractive index of the diamond
therefore
speed of light in air/refractive index of diamond = speed of light in diamond

$3 \times 10 {}^{8} \div 2.82 = 106382978m \: per \: second$