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a) Draw a diagram to show how a convergi...

a) Draw a diagram to show how a converging lens focusses parallel rays of light.
b) How would you after alter the above diagram to show how a converging lens can produce a beam of parallel rays of light.

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b) Placed a source of light (say, a lighted bulb) at the focus of the converging lens.
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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. An object is placed at the following distances from a convex lens of f...

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  2. When an object is placed at a distance of 36 cm from a convex lens, an...

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  3. a) Draw a diagram to show how a converging lens focusses parallel rays...

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  4. Write the formula for a lens connnecting image distance (v), object di...

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  5. What is the nature of the image formed by a convex lens if the magnifi...

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  6. What is the nature of the image formed by a convex lens if the magnifi...

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  7. What is the position of image when an object is placed is at a distanc...

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  8. Describe the nature of image formed when an object is placed at a dist...

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  9. At what distance from a converging lens of focal length 12 cm must an ...

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  10. State and explain the New Cartesian Sign Convention for spherical lens...

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  11. An object 4 cm high is placed at a distance of 10 cm from a convex len...

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  12. A small object is so placed in front of a convex lens of 5cm focal len...

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  13. Find the position and nature of the image of an object 5 cm high and 1...

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  14. Calculate the focal length of a convex lens which produces a virtual i...

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  15. An object is placed at a distance of 100 cm from a converging lens of ...

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  16. A convex lens produces an inverted image magnified three times of an o...

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  17. A converging lens of focal length 5 cm is placed at a distance of 20 c...

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  18. An object 5 cm in length is held 25 cm away from a converging lens of ...

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  19. At what distance should an object be placed from a convex lens of foca...

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  20. An object 2 cm tall is placed on the axis of a convex lens of focal le...

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