Question

A concave mirror has a radius of curvature of 60cm
Determine the position of image and magnification of an object placed in front of the mirrorat at a distance of 90cm

Answer 1

R=60cm
F=30cm
u=90cm ......-90cm .....as it is in front

1/v+1/u =1/F.

1/v - 1/90 = 1/30
1/v = 1/30 + 1/90
1/v = 120/270
V= 270/120
V=+27/12

The final image is 27/12cm behind the mirror

Answer 2

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