Physics · 2023
NEET 2023 · 7 May · Code E3 · Q36
Two thin lenses are of same focal lengths (f), but one is convex and the other one is concave. When they are placed in contact with each other, the…
Two thin lenses are of same focal lengths (f), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be :
Official answer
From NTA’s final answer key for this paper.
(4)
Infinite
More from Ray Optics and Optical Instruments
- In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then…2025
- A ray of monochromatic light is passing through an equilateral prism (ABC) as shown in the figure. The…2026
- Consider three media P, Q and R with refractive indices 1, 1.25, and 1.5, respectively. The medium Q having a…2026
- A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40…2025
- In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after…2026
- The lens combination as shown in the figure, consists of two lenses, L_1 and L_2, of the focal lengths +10 cm…2026
- Which of the following measurements require 'index correction'?2026
NEET (UG) 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.