– What is the optical separation between two thin lenses?
A. Δ = f1 – f2 – x
B. Δ = f1 + f2 – x
C. Δ = f1 – f2 + x
D. None of these
Answer:B
– What is the optical separation between two thin lenses?
A. Δ = f1 – f2 – x B. Δ = f1 + f2 – x C. Δ = f1 – f2 + x D. None of these