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Which of the following lenses would you ...

Which of the following lenses would you prefer to use while reading small letters found in a dictionary ?

A

A convex lens of focal length 50 cm

B

A concave lens of focal length 50 cm.

C

A convex lens of focal length 5 cm.

D

A concave lens of focal length 5 cm

Text Solution

Verified by Experts

The correct Answer is:
C
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-QUESTIONS SECTION (TEXTUAL EXERCISE)
  1. A spherical mirror and a thin spherical lens have each a focal length ...

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  2. No matter how far you stand from a mirror, your image appears erect. T...

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

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

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  5. Name the type of mirror used in the following situations. (a) Headli...

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  6. One - half of a convex lens is convered with a black paper. Will this ...

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  7. An object 5 cm in length is held 25 cm away a converging lens of focal...

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  8. A concave lens of focal length 15 cm forms an image 10 cm from the len...

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  9. An object is placed at a distance of 10 cm from a convex mirror of foc...

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  10. The magnification produced by a plane mirror is +l. What does this mea...

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  11. An object 5.0 cm in length is placed at a distance of 20 cm in front o...

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  12. An object of size 7.0 cm is placed at 27 cm in front of a concave mirr...

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  13. Find the focal length of a lens pf power - 2.0 D. What type of lens is...

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  14. A doctor has prescribed a corrective lens of power + 1.5 D. Find the f...

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

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

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  17. Where should an object be placed in front of a convec lens to get real...

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

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  19. No matter how far you stand from a mirror, your image appears erect. T...

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

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