JEE Main Physics · Ray Optics and Optical Instruments
Refractive Index and Speed
Refractive Index and Speed (Ray Optics and Optical Instruments) was asked 2 times in 2 JEE Main shifts, 2025, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.
- Times asked
- 2
- in 2 shifts
- Years
- 2025
- Usual format
- Assertion–reason
- Calculation
- Pattern
- New since 2024
- repeats across shifts
How it is asked
- Assertion-reason on refractive index and optical density
- Light speed ratio from permeability and permittivity
Difficulty
Easy 1Medium 1Hard 0
Where it sits
Chapter: Ray Optics and Optical Instruments. Topic: Refraction and Snell's Law, 15 questions over 8 ideas.
Other repeat ideas in this topic
Every time it came
All 2 questions
Newest first, each with its options and official answer.
- 4 Apr 2025, Shift 2 · Q47If an optical medium possesses a relative permeability of and relative permittivity of , then the…MediumNumerical value
- 7 Apr 2025, Shift 2 · Q41Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Refractive…EasyAssertion–reason