‹ Back to the paper
A thin converging lens of focal length is kept in contact with a thin diverging lens of focal…
A thin converging lens of focal length $12\text{ cm}$ is kept in contact with a thin diverging lens of focal length $18\text{ cm}$. Calculate the effective/equivalent focal length of the combination.
Answer
No answer yet.
From ISC 2022 Specimen Physics Paper 1, question 3(ii).