Question

an object held at a distance 60c.m form a convex mirror of focal length 20c.m.find the image distance and magnification​

Answer 1

Answer:

Distance of the image = 15 cm

Magnification = 0.25

Explanation:

Distance of the object = u = - 60 cm

Focal length = f = 20 cm

Distance of the image = v = ?

Magnification = ?

1/v + 1/u = 1/f

1/v = 1/f - 1/u

= 1/20 - (-1/60)

= 1/20 + 1/60

1/v = 80/1200 = 1/15

v = 15 cm

Distance of the image = 15 cm

Magnification = - v/u

= - 15/ - 60

= 0.25

Hope it helps you:)