Two Lens Combination Image Formation · PhysicsBowl 2022 #35
Physics · optics
Problem
A combination of two thin convex lenses is placed as shown at right. An object is placed 5 cm in front of L₁ which has a focal length of 10 cm. L₂ is 10 cm behind L₁ and has a focal length of 12 cm. How far from L₂ is the final image for this lens combination?
[Figure: Two convex lenses L₁ and L₂ arranged in series]
a. 8 cm b. 15 cm c. 22 cm d. 24 cm e. 30 cm