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An object 20 cm from a spherical mirror ...

An object 20 cm from a spherical mirror gives rise to a virtual image 15 cm behind the mirror. Determine the magnification of the image and the type of mirror used.

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m = + 0.75 , Convex mirror
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LAKHMIR SINGH & MANJIT KAUR-REFLECTION OF LIGHT -Exercise
  1. A shop security mirror 5.0 m from certain items displayed in the shop ...

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  2. An object is placed 15 cm from (alpha) a converging mirror, and (b) a ...

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  3. An object 20 cm from a spherical mirror gives rise to a virtual image ...

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  4. Define the principal focus of a concave mirror.

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  5. The radius of curvature of a spherical mirror is 20 cm. What is its fo...

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  6. Name a mirror that can give an erect and enlarged image of an object.

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  7. If the radius of curvature of a spherical mirror is 20 cm, what is its...

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

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

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

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

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

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

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

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  15. Define one dioptre of power of a lens.

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

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

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

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

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

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