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 3x108 m/s, calculate the speed of light in medium Y.​

Answer 1

Answer:

hello mate

Explanation:

In refraction, calculation angles are depend and are measured between the rays and the normal.

It often calculates the change in direction of a ray depends on with the change in speed of the light.

This can be used to calculate refractive Index from medium Z with respect to X.

X/Y= 2/3

Y/Z=4/3

X/Y*Y=2/3*4/3

X/Z=8/9

Z/X= 9/8

So, the refractive index of Z with respect to X is 9/8

Answer 2

Answer:

HOPE  THIS WILL HELP U

Explanation:

Speed = 40 km/ hr. Time taken = x / 40 hr. = 4000/90 = 44.44 km/ hr. Answer: Average speed 44.44 km/ hr.