In the List-I, four optical effects are mentioned. The physical phenomena of light which are essential to describe these optical effects are given in List-II. Choose the option which describes the correct match between the entries in List-I to those in List-II.
← JEE Advanced 2026 · Paper 1
PhysicsList match+4 / -1Question 30 of 48
JEE Advanced 2026 · Paper 1, Physics question 14
List-I
- PColorful sky in north polar region (Aurora Borealis)
- QPartially polarized sun light
- RRainbow
- SDark and bright fringes
List-II
- 1Dispersion and reflection
- 2Total internal reflection
- 3Diffraction
- 4Scattering of light by molecules in the atmosphere
- 5Emission of radiation from oxygen and nitrogen atoms excited by charged particles
Answer and worked solution
Official answer: A
- (P) Aurora: charged particles from the Sun excite oxygen and nitrogen atoms, which then emit light → 5.
- (Q) Partially polarized sunlight: scattering by air molecules polarizes the scattered light → 4.
- (R) Rainbow: dispersion and internal reflection in water drops → 1.
- (S) Dark and bright fringes: diffraction → 3.
P→5, Q→4, R→1, S→3.