Two identical symmetric double convex lenses of focal length $f$ are cut into two equal parts $L_{1}, L_{2}$ by $A B$ plane and $L_{3}, L_{4}$ by $X Y$ plane as shown in figure respectively. The ratio of focal lengths of lenses $L_{1}$ and $L_{3}$ is

Question

Question diagram: Two identical symmetric double convex lenses of focal length

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Answer:

B

Solution:

so $\frac{f _{1}}{f _{3}} = 1 : 2$

TestHub · Accepted Answer

so f 3 ​ f 1 ​ ​ = 1 : 2

Physics - Geometrical Optics Question with Solution | TestHub

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