Ray Optics and Optical Instruments

CBSE Class 12 · Physics · 23 past questions

14 of 23 · show all

1. Q1 2026

   A thin plano-convex lens and a thin equi-concave lens are kept coaxially in contact as shown in the figure.… (with a figure)

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2. Q4 2026

   A ray of light is travelling through a rectangular glass slab (refractive index $\dfrac{3}{2}$) and is…

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3. Q5 2026

   A concave lens of focal length 10 cm is cut into two identical plano-concave lenses. The focal length of each…

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4. Q6 2026

   A ray of light in air is incident at angle $\angle i$ on a face of an equilateral glass prism and is…

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5. Q7 2026

   A 5 cm long pencil is placed along the principal axis of a concave mirror of focal length 20 cm such that its…

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6. Q11 2025

   A tub is filled with a transparent liquid to a height of 30.0 cm. The apparent depth of a coin lying at the…

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7. Q12 2025

   A transparent solid cylindrical rod (refractive index $\frac{2}{\sqrt{3}}$) is kept in air. A ray of light… (with a figure)

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8. Q15 2024

   Explain the following…

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9. Q16 2024

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

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10. Q17 2024

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

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11. Q18 2024

    A convex lens (n = 1·52) has a focal length of 15·0 cm in air. Find its focal length when it is immersed in…

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12. Q20 2023

    In the given figure the radius of curvature of curved face in the plano-convex and the plano-concave lens is… (with a figure)

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13. Q22 2022

    A ray of light is incident on a prism at an angle of $45^\circ$ and passes symmetrically as shown in the… (with a figure)

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14. Q23 2022

    Two transparent media of refractive indices $n_1$ and $n_2$ are separated by a spherical transparent surface.…

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