When an object is located 32 cm to the left of the lens, the image is formed 17 cm to the right of the lens. What is the focal l

Question

3 years ago

10

ength of the lens?

1 answer:

Harman [31] · Answer 1 · 2021-12-31T07:16:43+03:00

Answer: 11.1cm

Explanation:

Object distance (u) = 32cm

Image distance(v) = 17cm

Focal length(f) =?

Lens formular:

1/f = 1/u + 1/v

1/f = 1/32 + 1/17

Taking the L. C. M of 17 and 32

1/f = (17 + 32) / 544

1/f = 49/544

Taking the reciprocal

f = 544/49

f = 11.1 cm

Therefore, Focal length of the lens is 11.1cm