When an object is located 41 cm to the left of a lens, the image is...

Question

Question

When an object is located 41 cm to the left of a lens, the image is formed 22 cm to the right of the lens.

What is the focal length of the lens?

Answer 1

Answer #1

object distance , s = 41 cm

image distance , s' = 22 cm

from the relation

1/s + 1/s' = 1/f

1/41 + 1/22 = 1/f

focal lenght ,

f = 14.31 cm

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Answer 2

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