Diamond has an index of refraction of 2.419. what is the critical angle for internal reflection inside a diamond that is in liquid of index of refraction n=2? a) 15.4° b) 55.8° c) 26° d) 20° e) 39°

B) 55.8°

Explanation:

n₁ = Refractive index of liquid = 2

n₂ = Refractive index of diamond = 2.419

Here it can be seen that the light ray is in the more dense medium and approaching the less dense medium which is a case of total internal reflection.

Critical angle

∴ Critical angle is 55.8°

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

c.the charges if the proton and electron and gravity