Ray Optics and Optical Instruments

CBSE Class 12 · Physics · 23 past questions

8 of 23 · show all

1. Q2 2026

   A telescope has an objective lens of focal length 144 cm and an eyepiece of focal length 6·0 cm. The…

   Try it →
2. Q3 2026

   In which of the following, total internal reflection does *not* occur ?

   Try it →
3. Q9 2025

   The magnification produced by a spherical mirror is $-2.0$. The mirror used and the nature of the image…

   Try it →
4. Q10 2025

   An equiconvex lens is made of glass of refractive index 1·55. If the focal length of the lens is 15·0 cm…

   Try it →
5. Q13 2024

   Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

   Try it →
6. Q14 2024

   The magnifying power of an astronomical telescope is 24. In normal adjustment, distance between its two…

   Try it →
7. Q19 2023

   A ray of monochromatic light propagating in air, is incident on the surface of water. Which of the following…

   Try it →
8. Q21 2023

   The refractive indices of two media A and B are 2 and $\sqrt{2}$ respectively. What is the critical angle for…

   Try it →