Ray Optics and Optical Instruments

Bihar Board Class 12 · Physics · 73 past questions

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1. Q9 2025 Set D

   If the critical angle for total internal reflection from any medium to vacuum is $30^\circ$, then the…

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2. Q27 2023 Set F

   The coefficient of reflection for total internal reflection will be

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3. Q29 2023 Set F

   The critical angle for total internal reflection of a ray from any medium to vacuum is 30°. Then velocity of…

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4. Q35 2022 Set I

   Critical angle for transparent medium diamond is

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5. Q42 2022 Set I

   Critical angle for glass is

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6. Q63 2018

   Critical angle for light moving from medium I to medium II is $\theta$. The speed of light in medium I is v.…

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7. Q67 2018

   A fish is at a depth of $\sqrt{7}$ cm and it can see only through a circular section of water surface. What… (with a figure)

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8. Q70 2017

   The critical angle of light passing from glass to air is minimum for-

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