Question

Please tell this question fast.​

Answer 1

Answer:

I think 5/3

Explanation:

make me brainliest and follow me

Answer 2

Answer:

Option D

Explanation:

refractive index = speed of light/ speed in medium

speed of light is constant, so R.I is inversely related with speed in medium :

n1/n2 = v2/v1

v2 = 125 (100 + 25 increase)

v1 = 100 (assumed)

125/100 = 5/4

THEREFORE OPT D