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State any two uses of convex lenses....

State any two uses of convex lenses.

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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. Where should an object be placed in order of to use a convex lens as a...

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  2. Name two factors on which the focal length of a lens depends.

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  3. State any two uses of convex lenses.

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  4. Fill in the following blanks with suitable words: a) Parallel rays ...

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  5. What is a lens? Distinguish between a convex lens and a concave lens. ...

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  6. a) Explain with the help of a digaram, why the convex lens is also cal...

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  7. a) Explain with the help of a diagram, why the concave lens is also ca...

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  8. Draw a ray diagram to show the formation of a real magnified image by ...

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  9. Describe with the help of a ray-diagram, the formation of image of a f...

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  10. Descibe with the help of a ray diagram the nature, size and position o...

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  11. An object is placed at a distance equal to 2f in front of a convex len...

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  12. Describe with the help of a ray-diagram, the size, nature and position...

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  13. Describe with the help of a ray diagram the nature, size and position ...

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  14. a) What type of lens is shown in the diagram on the right? What will h...

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  15. Where must the object be placed for the image formed by a converging l...

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  16. Draw a diagram to show how a converging lens held close to the eye act...

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  17. How would you find the focal length of a convex lens rapidly but appro...

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  18. a) With the help of a labelled diagram explain how a convex lens conve...

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  19. a) With the help of a labelled diagram, explain how a concave lens div...

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  20. Draw ray diagrams to represent the nature, position and relative size ...

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