Ts Eamcet
Ray Optics
TS EAMCET 2023 (Online) 14th May Morning Shift
MCQ+1 / -02023
Two convex lenses of focal lengths 20 cm and 30 cm are placed in contact with each other co-axially. The focal length of the combination is
Ts Eamcet
TS EAMCET 2023 (Online) 14th May Morning Shift
Two convex lenses of focal lengths 20 cm and 30 cm are placed in contact with each other co-axially. The focal length of the combination is