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Define plane of reflection.

Important Questions on Light

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The laws of reflection hold true for:
HARD
A person has D cm wide face and his two eyes are separated by d cm. The minimum width (in cm) of a mirror required for the person to view his complete face is :
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Find the value of ir in the diagram.

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If a mirror forms erect image for objects placed between pole and focus, and it forms real-inverted image for object placed anywhere between focus and infinity, then the mirror is:

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What is reflection of light? Write law of reflection and draw labelled diagram.

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What is the angle of incidence of a ray if the reflected ray is at an angle of 90 to the incident ray?
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The imaginary line perpendicular to the reflective surface is the _____.

MEDIUM
Boojho stands at A just on the side of a plane mirror as shown in figure. Can he see himself in the mirror? Also, can he see the image of objects situated at P, Q and R?
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If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will _____.

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What is the angle of reflection when a ray of light is incident normally on a plane mirror?
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An incident ray makes an angle of 75° with the surface of a plane mirror. What will be the angle of reflection?
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If the angle of incidence on a plane is i = 10°, the angle of reflection r is 
MEDIUM
Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.
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A ray of light is incident on a plane mirror and the angle of incidence is 25°. What is the angle of reflection?
MEDIUM
Two mirrors meet at right angles. A ray of light is incident on one at an angle of 30° as shown in the figure. Draw the reflected ray from the second mirror.        
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A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection?
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A ray of light is incident on a plane mirror and the angle of reflection is 50o . Calculate the angle between the incident ray and the reflected ray.
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A ray of light is incident normally (perpendicularly) on a plane mirror. Where will this ray of light go after reflection from the mirror?
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A ray of light is incident on a plane mirror and the angle of incidence is 25o . What is the angle of reflection?
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What is the angle between the incident and reflected rays when a ray of light is incident normally on a plane mirror?