#
Solve this:-

Q.):- The refractive index of a medium 'x' with respect to 'y' is 2/3 and the refractive index of medium 'y' with respect to 'z' is 4/3. Calculate the refractive index of medium 'z' with respect to 'x'.

Let X, Y and Z be the refractive index of the three mediums wrt to air.

According to the problem,

X/Y = 2/3 ....(i)

and

Y/Z = 4/3 .....(ii)

Multiplying (i) and (ii), we get

X/Z = 8/9

=> Z/X = 9/8

Regards

**
**