Ray Optics and Optical Instruments

CBSE Class 12 · Physics · 23 past questions

8 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. Q2 2026

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

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3. Q3 2026

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

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4. Q4 2026

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

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5. 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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6. 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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7. 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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8. Q8 2026

   In an experiment with convex lens of focal length f, the screen is fixed at a distance D from the object. A…

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