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Fill in the following blanks with suitale words:
A) A convex lens ……………….. Rays of light, whereas a concave lens …………… rays of light.
b) Lenses refract light to form images, a…………………. Lens can form both real and virtual images, but a diverging lens forms only.................images.

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a) Converges, diverges b) converging, virtual
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Fill in the following blanks with suitable words : A concave lens ___________ parallel rays of light whereas a convex lens _____________ parallel rays of light.

Fill in the following blanks with suitable words : In image formation, convex lens is very similar to_________ mirror whereas concave lens is very similar to___________mirror.

Fill in the following blanks with suitable words: a) Parallel rays of light are refracted by a convex lens to a point called the…………… b) The image in a convex lens depends uponthe distance of the ……………. From the lens.

Which type of lens forms always a virtual image ?

LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. a) What type of images can a convex lens make? b) What type of image...

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  2. Take down this figure into your answer book and complete the path of t...

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  3. Fill in the following blanks with suitale words: A) A convex lens ……...

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  4. Things always look small on viewing through a lens. What is the nature...

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  5. An object lies at a distance of 2f from a concave lens of focal length...

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  6. Show by drawing a ray-diagram that the image of an object formed by a ...

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  7. Give the position, size and nature of image formed by a concave lens w...

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  8. Which type of lens is: a) a converging lens, and which is (b) a diverg...

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  9. With the help of a diagram, explain why the image of an object viewed ...

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  10. How would a pencil look like if you saw it through a) a concave lens, ...

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  11. a) An object is placed 10 cm from a lens of focal length 5 cm. Draw th...

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  12. a) Construct ray diagrams to illustrate the formation of a virtual ima...

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  13. When an object is kept at any distance in front of a concave lens, the...

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  14. When sunlight is concentrated on a piece of paper by a spherical mirro...

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  15. A beam of parallel light rays is incident through the holes on one sid...

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  16. A beam of light is incident through the holes on one side of a box eme...

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  17. Which of the following can form a virtual image which is always smalle...

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  18. When an object is placed 10 cm in front of lens A, the image is real, ...

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  19. When a fork is seen through lenses A and B one by one, it appears as s...

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  20. What kind of lens can form: a) an inverted magnified image? an ere...

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