Question

An object is placed 30cm from a concave mirror of focal length 20cm. Calculate.

1. The Image Position
2. The Magnification

Answer 1

1. ¹/_f=¹/_v + ¹/_u,
   ¹/_v=¹/_f − ¹/_u,
   u=+30cm, f=+20cm, v=+60cm.
2. m=^v/_u,
   m=⁶⁰/₃₀=2

Answer 2

1