A light ray is incident on a mirror such that it makes it makes 30- with the surface of the mirror- Find the angle of reflection-2 MARKS-

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Standard VIII

Physics

Laws of Reflection

A light ray i...

Question

A light ray is incident on a mirror such that it makes it makes $30^{\circ}$ with the surface of the mirror. Find the angle of reflection.
[2 MARKS]

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Solution

Diagram: 1 Mark
Explanation: 1 Mark

Draw a normal to the mirror AB as shown.

AOX forms a right angle. So, the incident ray makes $60^{\circ}$ with the normal.

According to the first law of reflection,

$A n g l e o f i n c i d e n c e = A n g l e o f r e f l e c t i o n = 60^{\circ}$

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A light ray is incident on a mirror such that it makes it makes 30∘ with the surface of the mirror. Find the angle of reflection. [2 MARKS]

Diagram: 1 Mark Explanation: 1 Mark Draw a normal to the mirror AB as shown. AOX forms a right angle. So, the incident ray makes 60∘ with the normal. According to the first law of reflection, Angle of incidence = Angle of reflection = 60∘

A light ray is incident on a mirror such that it makes it makes $30^{\circ}$ with the surface of the mirror. Find the angle of reflection.
[2 MARKS]

Diagram: 1 Mark
Explanation: 1 Mark

Draw a normal to the mirror AB as shown.

AOX forms a right angle. So, the incident ray makes $60^{\circ}$ with the normal.

According to the first law of reflection,

$A n g l e o f i n c i d e n c e = A n g l e o f r e f l e c t i o n = 60^{\circ}$