Question

79. An object is placed at a distance of 40 cm from a con-
cave mirror of focal length 15 cm. If the object is dis-
placed through a distance of 20 cm towards the mirror,
the displacement of the image will be:
A. 30 cm away from the mirror
B. 36 cm towards the mirror
C. 30 cm towards the mirror
D. 36 cm away from the mirror
mois​

Answer 1

answer:

C. 30 cm towards the mirror

Explanation:

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