Previous year questions with solutions · 2024 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 3 | 2 | 1.5 | 8.82% ▲ 182.4% vs last year |
| 2025 | 1 | 2 | 0.5 | 3.12% ▼ 64.6% vs last year |
| 2024 | 3 | 2 | 1.5 | 8.82% |
A double convex lens made of glass of refractive index 1.5 and radii of curvature of the curved surfaces 20 cm each is immersed in a liquid of refractive index nL. The correct plot showing the variation of the power, in the units of diopter (D), as a function of nL is:
A beam of polychromatic light passes through a thin prism of prism angle 6 . The refractive index of the material of the prism varies with wavelength ( ) as n( )= + 2, where =3 m-1 and =0.096 m2. If is the wavelength at which the angle of minimum deviation Dm is smallest, then the correct value of Dm at is