Question

डिफाइन रिफ्रैक्टिव इंडेक्स ​

Answer 1

Answer:

It is the ratio of velocity of light in a vacuum to its velocity in a specified medium.

Hope this is helpful

Answer 2

Answer:

whats that language

Explanation:

im sorry i need 5more  points to ask a questions......thats why i am doing this sorry