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a) What type of lens is shown in the dia...

a) What type of lens is shown in the diagram on the right? What will happen to the parallel rays of light? Show by completing the ray diagram.
b) Your eye contains a convex lens. Why is it unwise to look at the sun?

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Draw a ray diagram to show image formation by a concave lens.

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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. Describe with the help of a ray-diagram, the size, nature and position...

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

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

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

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

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

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

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

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

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

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

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

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  13. Which one of the following materials cannot be used to make a lens ?

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  14. A small bulb is placed at the focal point of a converging lens. When t...

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  15. An illuminated object is placed at a distance of 20 cm from a convergi...

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  16. An object is placed between f and 2f of a convex lens. Which of the fo...

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  17. Given a point source of light, which of the following can produce a pa...

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  18. In order to obtain a real image twice the size of the with a convex le...

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  19. A converging lens is used to produce an image of an object on a screen...

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  20. A convex lens of focal length 8 cm forms a real image of the same size...

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