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a) Explain with the help of a digaram, w...

a) Explain with the help of a digaram, why the convex lens is also called a converging lens.
b) Define principle axis, principle focus and focal length of a convex lens.

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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. Fill in the following blanks with suitable words: a) Parallel rays ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. a) An object is placed well outside the principle focus of a convex le...

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  19. a) Explain what is meant by a virtual, magnified image. b) Draw a ra...

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  20. A convex lens a focal length of 10 cm. At which of the following posit...

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