Find out the angle of deviation after reflection, if the incident ray makes 30⁰ with the normal?

180°

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120°

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140°

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110°

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Solution

The correct option is B
120°

Deviation, θ = π - 2i

Angle of deviation = π– 2( $30^{\circ}$ )

= $120^{\circ}$

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Find out the angle of deviation after reflection, if the incident ray makes 300 with the normal?

The correct option is B 120° Deviation, θ = π - 2i Angle of deviation = π– 2(30∘) = 120∘

Find out the angle of deviation after reflection, if the incident ray makes 30⁰ with the normal?

The correct option is B
120°

Deviation, θ = π - 2i

Angle of deviation = π– 2( $30^{\circ}$ )

= $120^{\circ}$