JEE Main Physics · Ray Optics and Optical Instruments
Plano-Convex Lens Focal Length
Plano-Convex Lens Focal Length (Ray Optics and Optical Instruments) was asked 2 times in 2 JEE Main shifts, 2020, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.
- Times asked
- 2
- in 2 shifts
- Years
- 2020
- Usual format
- Numerical value
- Calculation
- Pattern
- Gone quiet
- repeats across shifts
How it is asked
- Radius of plano-convex lens from power ratio
- Focal length of plano-convex lens
Difficulty
Easy 1Medium 1Hard 0
Where it sits
Chapter: Ray Optics and Optical Instruments. Topic: Lens Maker's Formula, 24 questions over 11 ideas.
Other repeat ideas in this topic
Every time it came
All 2 questions
Newest first, each with its options and official answer.
- 8 Jan 2020, Shift 1 · Q25A point object in air is in front of the curved surface of a plano-convex lens. The radius of curvature of the curved surface is 30 cm and…EasyNumerical value
- 6 Sep 2020, Shift 2 · Q17A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a…MediumSingle correct