Question

An object is 0.09 m from a magnifying lens and the image is formed 36 cm from the lens. The magnification produced is:
(a) 0.4
(b) 1.4
(c) 4.0
(d) 4.5 

Answer 1

 4.0

Magnification is given by: 

Magnification (m) =`"distance of image from the lens "/distance of object from the lens` 

m `(-36 cm) /(-0.09 m) =(36 cm)/(9cm)` =4