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Where should an object be placed in orde...

Where should an object be placed in order of to use a convex lens as a magnifying glass?

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A convex lens a focal length of 10 cm. At which of the following position should an object be placed so that this convex lens may act as a magnifying glass?

Where should an object be placed in front of a convex lens so as to obtain its real, inverted and magnified image?

A concave lens is used as a magnifying glass.

Where should an object be placed in front of a convex lens to get a real to get real image of the size of the object ?

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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. If an object is at a considerable distance (or infinity) in front of a...

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  2. Draw the given diagram, Fig. in your answer book and complete it for t...

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  3. Where should an object be placed in order of to use a convex lens as a...

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

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  5. State any two uses of convex lenses.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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