Question

if the refractive index of a material is 2.4, then what is the critical angle

Answer 1

Answer:

24.6 degrees

Explanation:

Using Snell’s Law going from diamond to air:

2.4sin(theta)= 1sin90

sin(theta)=1/2.4=.417

Theta(critical) = 24.6 degree

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Answer 2

Answer:

24 degrees

Explanation:

The critical angle can be calculated from Snell's law by setting the refraction angle equal to 90°.

Snell's Law

ni sin(o) = ni sin (90)

2.4*10= 24 degrees