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The radius of curvature of a spherical m...

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

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Name a mirror that can give and erect and enlarged image of an object .
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LAKHMIR SINGH & MANJIT KAUR-REFLECTION OF LIGHT -Exercise
  1. An object 20 cm from a spherical mirror gives rise to a virtual image ...

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  2. Define the principal focus of a concave mirror.

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

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

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

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

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

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

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

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

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

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

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  13. Define one dioptre of power of a lens.

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

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

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

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

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

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

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

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