Question

18) What is the critical angle ? 3 3. The absolute refractive index of water is 4 3 1 1 A. We know that sin c = Refractive index 3 sinc = 0.75 4 critical angle of water 'c' = 48.5° - How did we get answer 48.5 Explain​

Answer 1

Answer:

48.59°

Explanation:

Refer to the image....

Critical angle is the angle of incidence in the denser medium when the angle of refraction in the less dense medium is 90°