Home
Class 12
PHYSICS
A card sheet divided into squares each ...

A card sheet divided into squares each of size `"1 mm"^(2)` is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 9 cm) held close to the eye.
What is the angular magnification (magnifying power) of the lens ?

Text Solution

Verified by Experts

b) `"Magnifying power "=(d)/(u)=25//9=2.8`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICAL AND INSTRUMENTS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise LONG ANSWER QUESTIONS|10 Videos

  • NUCLEI

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise DAM SURE (VSAQ)|1 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES , AND SIMPLE CIRCUITS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise ADDITIONAL EXERCISES|8 Videos

Similar Questions

Explore conceptually related problems

A card sheet divided into squares each of size "1 mm"^(2) is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 9 cm) held close to the eye. a) What is the magnification in produced by the lens? How much is the area of each square in the virtual image ?

A man with normal near point (25 cm) reads a book with small print using a magnifying glass: a thin convex lens of focal length 5 cm. b) What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?

b) In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

A giant refracting telescope at an observatory has an objective lens of focal length 15 m. If an eyepiece of focal length 1.0 cm is used, what is the angular magnification of the telescope ?

The maximum magnification that can be obtained with convex lens of focal length 2.5 cm is (the least distance of distinct vision is 25 cm)

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-RAY OPTICAL AND INSTRUMENTS-TEXTUAL EXERCISES
  1. A man with normal near point (25 cm) reads a book with small print usi...

    Text Solution

    |

  2. A card sheet divided into squares each of size "1 mm"^(2) is being vi...

    Text Solution

    |

  3. A card sheet divided into squares each of size "1 mm"^(2) is being vi...

    Text Solution

    |

  4. A card sheet divided into squares each of size "1 mm"^(2) is being vi...

    Text Solution

    |

  5. a) At what distance should the lens be held from the figure in Exercis...

    Text Solution

    |

  6. b) What is the magnificiation in this case ?

    Text Solution

    |

  7. c) Is the magnification equal to the magnifying power in this case ? E...

    Text Solution

    |

  8. What should be the distance between the object in Exercise 30 and the ...

    Text Solution

    |

  9. a) The angle subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  10. b) In viewing through a magnifying glass, one usually positions one's ...

    Text Solution

    |

  11. c) Magnifying power of a simple microscope is inversely proportional t...

    Text Solution

    |

  12. d) Why must both the objective and the eyepiece of a compound microsco...

    Text Solution

    |

  13. e) When viewing through a compound microscope, our eyes should be posi...

    Text Solution

    |

  14. An angular magnification (magnifying power) of 30 X is desired using a...

    Text Solution

    |

  15. A small telescope has an objective lens of focal length 140 cm and an ...

    Text Solution

    |

  16. A small telescope has an objective lens of focal length 140 cm and an ...

    Text Solution

    |

  17. a) For the telescope described in Exercise 34 (a), what is the separat...

    Text Solution

    |

  18. b) If this telescope is used to view a 100 m tall tower 3 km away, wha...

    Text Solution

    |

  19. c) What is the height of the final image of the tower if it is formed ...

    Text Solution

    |

  20. A cassegrain telescope is built with the mirrors 20 mm apart. If the r...

    Text Solution

    |