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Question

Question 12
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.

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Solution

Focal length, f=15cm
Object distance, u=10cm
According to mirror formula,
1f=1v+1u
1v=115+110
1v=530=16
v=+6 cm
The image is formed 6 cm behind the mirror.
Magnification, m=vu=610=0.6
The positive value of magnification indicates the image is a virtual, erect and magnified image.

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