Question

Refractive index of medium X with respect to air is 2.5 and that of medium y is 1.5. A) In which medium does the light move faster, x or y? B) What is the refractive index of y with respect to X?​

Answer 1

Answer:

The lesser the refractive index, the greater the speed of light. So, light moves faster in the medium Y.

Explanation:

mew X÷mew Y

search for mew... it is a Greek letter which denotes the refractive index.