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A concave mirror produces three times ma...

A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Where is the image located ?

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(a) To construct a ray diagram, we use two rays which are so chosen that it is easy to know their directions after reflection from the mirror. List two such rays and state the path of these rays after reflection in case of concave mirrors. Use these two rays and draw ray diagram to locate the image of an object placed between pole and focus of a concave mirror. (b) A concave mirror produces three times magnified image on a screen. If the object is placed 20 cm in front of the mirror, how far is the screen from the object?

An object placed at 20cm in front of a concave mirror produces three times magnified real image. What is the focal length of the concave mirror?

A concave mirror forms a real image four times as tall as the object placed 10 cm infront of mirror. Find the position of the image and the radius of curvature of the mirror.

LAKHMIR SINGH & MANJIT KAUR-REFLECTION OF LIGHT -Exercise
  1. If the radius of curvature of a spherical mirror is 20 cm, what is its...

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  2. Find the focal length of a concave mirror whose radius of carvature is...

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  3. A concave mirror produces three times magnified real image of an objec...

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  4. A ray of light travelling in air enters obliquely into water. Does the...

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  5. Light enters from air into a glass plate having refractive index 1.50....

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  6. Find out from Table on page 225 the medium having highest optical dens...

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  7. You are given kerosene, turpentine and water. In which of these does t...

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  8. The refractive index of diamond is 2.42. What is the meaning of this s...

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  9. Define one dioptre of power of a lens.

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  10. A convex lens forms a real and inverted image of a needle at a distanc...

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  11. Find the power of a concave lens of focal length 2 m.

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

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  13. The image formed by a concave mirror is observed to be virtual, erect ...

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  14. Where should an object be placed in front of a convex lens to get a re...

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  15. A spherical mirror and a thin spherical lens have each a focal length ...

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  16. No matter how far you stand from a spherical mirror, your image appear...

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  17. Which of the following lenses would you prefer to use while reading sm...

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  18. We wish to obtain an erect image of an object, using a concave mirror ...

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  19. Name the type of mirror used in the following situations : (a) Head ...

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  20. One half of a convex lens is covered with a black paper. Will this len...

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