Question

A 15.0 cm tall object is placed 20.0 cm from a converging lens with a 10.0 cm focal length. Where is the image located?

Question 3 options:

20 cm


30 cm


10 cm


5 cm

Answer 1

Answer: 20 cm

Explanation:

Given that

F = 10 cm

U = 20 cm

1/F = 1/V - 1/U

1/10 = 1/V - 1/20

1/V = 1/10 - 1/20

1/V = (2 - 1)/20

1/V = 1/20

V = 20 cm

The image will be located at 20cm away from the lens.