An optic fiber is made of clear plastic with index refraction of 1.50. For what angle of incidence will light remain wit...

Question

Question

An optic fiber is made of clear plastic with index refraction of
1.50. For what angle of incidence will light remain within the plastic guide?

Answer 1

Answer #1

uploaded image

n1 medium One that is glass refrative index.

n2 refractive index of air which is equal to 1.

putting it into the formula

angle=

=41.8 degree.

this is called critical angle, angle a which light gets reflected in the same medium from which it comes.

the above equation comes from snell's law of refraction.

Answer 2

Answer #2

sin^-1 (1/1.5)
=41.8 degrees

Answer 3

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