Ray Optics and Optical Instruments

Bihar Board Class 12 · Physics · 73 past questions

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1. Q26 2023 Set F

   A spherical mirror is immersed in water. Its focal length will

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2. Q38 2022 Set I

   If the focal length of a glass lens $\left(\mu=\frac{3}{2}\right)$ in air is $f_a$ and in water…

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3. Q56 2019

   Equivalent focal length of two lenses in contact having power -15D and +5D will be

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4. Q58 2019

   A convex lens (n=1.5) is immersed in water (n=1.33), then it will behave as a

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5. Q60 2019

   Two thin convex lens of power +5 and +4 diopter and placed co-axially at a distance 10 cm. Find the focal…

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6. Q64 2018

   A magnifying glass is to be used at the fixed object distance of 1 inch. If it is to produce an erect image 5…

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7. Q73 2017

   A point object is placed above principle axis at a distance three times focal length of a convex lens. Draw… (with a figure)

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