Question

the refractive index of a medium X with respect to a medium y is 2 / 3 and the refractive index of medium Y with respect to medium Z is 4 /3 find the refractive index of medium Z with respect to medium x if the speed of light in medium X is 3 * 10 ^ 8 m/s calculate the speed of light in medium y​

Answer 1

Answer:9/8 AND

Explanation:

SPEED IN X/SPEED IN Y=2/3

SPEED IN Y/SPEED IN Z=4/3

X/Y=2/3       ------(i)

Y/Z=4/3       ------(ii)

multiplying (i) and (ii) we get:-

X/Y×Y/Z=2/3×4/3

X/Z=8/9

Z/X=9/8

WHEN X=3×10^8 m/s

X/Y=2/3

3×10^8/Y=2/3

Y=3×3×10^8/2

Y=9×10^8/2

Y=4.5×10^8 m/s