Question:medium
5 thin lenses each of 20 cm focal length are placed in contact with each other. The net power of this lens combination is
5 thin lenses each of 20 cm focal length are placed in contact with each other. The net power of this lens combination is
Show Hint
Power adds up directly for lenses in contact.
Updated On: Apr 27, 2026
- 5D
- 20 D
- 10 D
- 25 D
- 15 D
Show Solution
The Correct Option is D
Solution and Explanation
Was this answer helpful?
0
Top Questions on Ray optics and optical instruments
- A light ray passes from air (refractive index = 1) into water (refractive index = 1.33). If the angle of incidence is 30°, what is the angle of refraction in water?
- MHT CET - 2025
- Physics
- Ray optics and optical instruments
- A convex lens has a focal length of 20 cm. An object is placed 30 cm in front of the lens. What is the image distance from the lens?
- MHT CET - 2025
- Physics
- Ray optics and optical instruments
- A lens has focal length $ f = 20 \, \text{cm} $. What is the power of the lens?
- MHT CET - 2025
- Physics
- Ray optics and optical instruments
- An object is placed at a distance of 10 cm from a concave mirror of focal length 15 cm. What is the image distance?
- MHT CET - 2025
- Physics
- Ray optics and optical instruments
- Want to practice more? Try solving extra ecology questions todayView All Questions
