Question

A 2cm object placed 10cm in front of concave mirror of focal length 15 cm . Find the position , size and nature of the image formed

Answer 1

Focal length (f) = 15 cm

Distance of object from the convex mirror (u) = 10 cm

Image distance (v) = ?

1/v - 1/u = 1/f

1/v - 1/10 = 1/15

1/v = 1/5 + 1/10

1/v = 2 + 3 / 30

1/v = 5/30

1/v = 1/6

v = 6 cm

Image distance = 6 cm

Image distance is in positive, thus the image is formed behind the mirror, thus it's VIRTUAL and ERECT.

Answer 2

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