1.

An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be

Answer»

tion:v/u = f/ f-uv/40 =  -15 / -15 + 40v =  -24cmv / 20 = -15 / -15 +20V =  -60cm that is the mirror MOVED by 36 CM  away



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