Physics · 2026
JEE Main · 4 April 2026, Shift 2 · Q41
A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its focal length…
A convex lens is made from glass material having refractive index of $\displaystyle 1.4$ with same radius of curvature on both sides. The ratio of its focal length and radius of curvature is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 1.25$
More from Ray Optics
- A ray of light passing through an equilateral prism is having velocity 2.12 × 10^8 m / s in the prism…2026
- One side of an equilateral prism is painted by a transparent material of refractive index n_2. The refractive…2026
- If sunlight is focused on a paper using convex lens, it starts burning the paper in shortest time when the…2026
- For a thin symmetric prism made of glass (refractive index 1.5), the ratio of incident angle and minimum…2026
- An object A B is placed 15 cm on the left of a convex lens P of focal length 10 cm. Another convex lens Q is…2026
- Angle of minimum deviation is equal to the half of the angle of prism in an equilateral prism. The refractive…2026
- A thin convex lens and a thin concave lens are kept in contact and are co-axial. Which of the following…2026
- A rod of length 10 cm lies along the principle axis of a concave mirror of focal length 10 cm as shown in…2026
JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.