Ray Optics and Optical Instruments

Bihar Board Class 12 · Physics · 73 past questions

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1. Q69 2017

   A short sighted person uses for clear vision-

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2. Q70 2017

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

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3. Q71 2017

   The angle of minimum deviation for thin prism of refractive index $\mu$ is

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4. Q72 2017

   The focal length of a lens $\mu=1.5$ in air is 20 cm. Its focal length is medium of refractive index 1.5 is-

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5. 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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