When a ray of light strikes a plane mirror along the normal, the angle of incidence is -

90^{\circ}

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zero

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45^{\circ}

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none of these

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Solution

The correct option is A zero

Angle of incidence is the angle made by incident ray and normal to the mirror. Here, the ray incidents along normal so,
From the figure, angle of incidence $= 0^{\circ}$ .

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Similar questions

A ray of light strikes a plane mirror PQ at an angle of incidence of $30^{\circ}$ , is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is :

(a) $30^{\circ}$ (b) $45^{\circ}$ (c) $60^{\circ}$ (d) $90^{\circ}$ Draw a ray-diagram to illustrate your answer.

What is the angle of incidence when a ray of light is incident normally on a plane mirror?

Q. A ray of light falls on a plane mirror. When the mirror is turned clockwise about an axis along the plane of the mirror by

20^{\circ}

, the incident ray gets deflected by

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. The original incidence angle is

A ray of light strikes a plane mirror such that its angle of incidence is $30^{\circ}$ . What angle does the reflected ray make with the mirror surface?

What is the angle of reflection when a ray of light is incident normally on a plane mirror?

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When a ray of light strikes a plane mirror along the normal, the angle of incidence is -

The correct option is A zeroAngle of incidence is the angle made by incident ray and normal to the mirror. Here, the ray incidents along normal so,From the figure, angle of incidence=0∘.

The correct option is A zero

Angle of incidence is the angle made by incident ray and normal to the mirror. Here, the ray incidents along normal so,
From the figure, angle of incidence $= 0^{\circ}$ .