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Question
What is the position of the image when an object is placed at a distance of 20 cm from a concave mirror of focal length 20 cm?
Solution
When an object is placed at a distance of 20 cm from a concave mirror of focal length 20 cm, the position of the image is at infinity. The reason being, the image formed by a concave mirror is at infinity when an object is placed at its focus.
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