Draw a labeled diagram showing how a plane mirror an image of a point placed in front of it.

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Let start drawing the diagram before start drawing we must know where the observer is placed.


Here point object is A and the ray of light from the object fall on the plane mirror. It gets reflected, here one incident ray strike at a perpendicular to the mirror and gets reflected along the same path (i1=r1=900 at point B) and five ray strike at a different angle (point B, C, D, E, F, G). In each case, the law of reflection holds true so –


At point C i2=r2, at point D i3=r3, at point E i4=r4, at point F i5=r5, at point G i6=r6


Now extend all the reflected ray in the backward direction. The point (A’) where all the line meet is called Image point (A’).


The image formed by a plane mirror is virtual means we cannot take on a screen. (We cannot place screen behind the mirror)


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