Question

An object is placed
so - 15 cm
so=15cm away from a convex mirror of focal length f=−30cm.
Answer the following questions.

1. What is the distance siof the image from the lens?

2. The image is:

3. What is the magnification of the image?

Answer 1

Solution)

1)

By mirror formula, 1/f=1/u+1/v

1/-30=1/15+1/v

1/3=1/v

=> -10 cm=v=image distance

2) The image formed is real, upside down and behind the mirror.

3) magnification, m= -v/u =10/15 = +2/3 (Ans)

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Good luck!:)