The image of an object formed by a mirror is real, inverted and is of magnification -1. If
the image is at a distance of 40 cm from the mirror, where is the object placed? Where
would the image be if the object is moved 20 cm towards the mirror?
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Answer:
the object is placed 40cm far in front of mirror .image will form 20cm far as 40-20 is 20 so image will be 20 cm from the mirror
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