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Question
The figure shows a point object O in front of a plane mirror PQ. Complete the ray diagram and locate the image of O.
The figure shows a point object O in front of a plane mirror PQ. Complete the ray diagram and locate the image of O.
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Solution
- From the object O rays of light travels in all directions.
- To show the formation of the image by the plane mirror, we consider two rays coming from the object O which falls on the mirror.
- OA and OB be the two rays incident from the object O which get reflected from the mirror in directions AC and BD.
- When we see from the positions C and D, the rays between C and D appear to come from some point I behind the mirror.
- Point I is the image of the object O.
- To locate the position of I, reflected rays AC and BD are produced backward, and the point where they meets gives the position of the image I.
- The image is virtual because the reflected rays AC and BD actually don't meet at I. But to our eye, they appear to come from I.
- From the object O rays of light travels in all directions.
- To show the formation of the image by the plane mirror, we consider two rays coming from the object O which falls on the mirror.
- OA and OB be the two rays incident from the object O which get reflected from the mirror in directions AC and BD.
- When we see from the positions C and D, the rays between C and D appear to come from some point I behind the mirror.
- Point I is the image of the object O.
- To locate the position of I, reflected rays AC and BD are produced backward, and the point where they meets gives the position of the image I.
- The image is virtual because the reflected rays AC and BD actually don't meet at I. But to our eye, they appear to come from I.
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