Question

A diverging lens has a focal length of magnitude 20 cm. An object is placed 10 cm in front of the diverging lens. Calculate the magnification of the image and whether it is upright or inverted. 0.85 inverted 1.5 upright 0.52 upright 0.67 inverted 0.67 upright

Answer 1

Here,

f = -20 cm

object distance, u = - 10 cm

Using lens formula

1/f = 1/v - 1/u

-1/20 = 1/v + 1/10

v = -6.67 cm

magnification = - v/u

magnification = 6.67/10 = 0.67

the image is upright

the magnification is

0.67 upright