Homework Answers
Let u = object distance
v = image distance
f = focal length
We have lens equation,
1/f = 1/u +1/v
Given that u+v = 5.7 cm & f= -2.5 cm
Substitute v = (5.7 - u) in the lense equation.
Hence ,
(a) image distance = -1.88 cm
(b) object distance = 7.58 cm
Hope the answer helps you. All the best wishes for your studies ?.
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