If a ray of light travelling in a medium is incident at an angle of 60 degrees on an interface and the angle of refraction is 70 degrees, find the angle of deviation.

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Solution

Angle of deviation = Angle of refraction - Angle of incidence
= $70^{\circ} - 60^{\circ} = 10^{\circ}$

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If a ray of light travelling in a medium is incident at an angle of 60 degrees on an interface and the angle of refraction is 70 degrees, find the angle of deviation.

Angle of deviation = Angle of refraction - Angle of incidence = 70∘−60∘=10∘

Angle of deviation = Angle of refraction - Angle of incidence
= $70^{\circ} - 60^{\circ} = 10^{\circ}$