Question

A candle is placed at a distance of 40 cm from a mirror of focal length 20 cm, image is formed on a screen placed in front of the mirror. Find the distance of the screen from the mirror

Answer 1

Explanation:

The nature of the mirror is concave since the image formed is real. Hence, the focal length of the concave mirror is 20 cm. Thus, the image height is 4.8 cm.

Answer 2

Answer:

80 cm

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