Light is incident on a small scratch in the surface of an optical fibre of refractive index 1.5. The angle between a ray of incident light and the surface of the scratch is 68 as shown below. 68 optic fibre refractive index 1.5 (i) Calculate the angle of refraction of the ray at the surface of the scratch. (ii) On the diagram, draw a sketch of the path of the ray as it emerges from the surface of the scratch.
Light is incident on a small scratch in the surface of an optical fibre of refractive index 1.5. The angle between a ray of incident light and the surface of the scratch is 68 as shown below. 68 optic fibre refractive index 1.5 (i) Calculate the angle of refraction of the ray at the surface of the scratch. (ii) On the diagram, draw a sketch of the path of the ray as it emerges from the surface of the scratch.
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Transcribed Image Text:(b)
Light is incident on a small scratch in the surface of an optical fibre of refractive index 1.5.
The angle between a ray of incident light and the surface of the scratch is 68 as shown
below.
68
optic fibre
refractive index 1.5
(i)
Calculate the angle of refraction of the ray at the surface of the scratch.
(ii) On the diagram, draw a sketch of the path of the ray as it emerges from the surface
of the scratch.
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