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A small candle, 2.5 cm in size is placed...

A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?

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PSEB-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISE
  1. A small candle, 2.5 cm in size is placed at 27 cm in front of a concav...

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  2. A 4.5 cm needle is placed 12 cm away from a convex mirror of focal len...

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  3. A tank is filled with water to a height of 12.5 cm. The apparent depth...

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  4. Figures (a) and (b) show refraction of a ray in air incident at 60^@ w...

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  5. A small bulb is placed at the bottom of a tank containing water to a d...

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  6. A prism is made of glass of unknown refractive index. A parallel beam ...

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  7. Double-convex lenses are to be manufactured from a glass of refractive...

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  8. A beam of light converges at a point P. Now a lens is placed in the pa...

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  9. A beam of light converges at a point P. Now a lens is placed in the pa...

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  10. An object of size 3.0cm is placed 14cm in front of a concave lens of f...

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  11. What is the focal length of a convex lens of focal length 30cm in cont...

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  12. A compound microscope consists of an objective lens of focal length 2....

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  13. What is the focal length of a convex lens of focal length 30cm in cont...

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  14. A person with a normal near point (25 cm) using a compound microscope ...

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  15. A small telescope has an objective lens of focal length 144cm and an e...

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  16. A giant refracting telescope at an observatory has an objective lens o...

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  17. A telescope has objective lens of focal length 15m. If this telescope ...

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  18. Use the mirror equation to deduce that: an object placed between f and...

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  19. Use the mirror equation to deduce that: a convex mirror always produce...

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  20. Use the mirror equation to deduce that: the virtual image produced by ...

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