Question

An object is 12 cm in front of a converging lens with a focal length of 4.0 cm. Where is the image? A) 8.0 cm behind the lens

B) 6.0 cm in front of the lens

C) 6.0 cm behind the lens

D) 4.0 cm in front of the lens

Answer 1

Answer:

C) 6.0 cm behind the lens

Explanation:

This problem bothers on the curved mirrors.

Given data

Object distance u= 12cm

Focal length f= 4cm

Let the image distance be = v

Applying

1/v+1/u = 1/f

1/v+1/12= 1/-4

1/v= 1/4-1/12

1/v= 6-2/24

1/v= 4/24

1/v= 1/6

v= 6cm