Home
Class 12
PHYSICS
A convex lens of focal length 5cm is use...

A convex lens of focal length 5cm is used as a simple microscope. What is the magnifying power, if final image is formed at the distance of distinct vision i.e. 25 cm ? If it is used as an eyepiece in a compound microscope with objective of magnifying power 40, what is the magnifying power of the compound microscope ?

Text Solution

Verified by Experts

The correct Answer is:
6, 240
Promotional Banner

Topper's Solved these Questions

  • OPTICAL INSTRUMENTS

    SL ARORA|Exercise Problems from Competitive Examination|3 Videos

  • MAGNETISM

    SL ARORA|Exercise Based on (i) Earth s Magnetism (ii) magnetic field of a bar magnet|60 Videos

  • RAY OPTICS

    SL ARORA|Exercise TYPE I|12 Videos

Similar Questions

Explore conceptually related problems

The magnifying power of a compound microscope is

A convex lens of focal length 5 cm is used as a simple microscope. What will be the magnifying power when the image is formed at the least distance of distinct vision ?

In order to increase the magnifying power of a compound microscope

The magnifying power of a compound microscope is high if

The magnifying power of simple microscope is

Calculate the focal length of a lens used as simple microscope of magnifying power 20. Consider that the final image is formed at the least distance of distinct vision.

A converting lens of power 100 dioptre is used as a simple microscope. What is its magnifying power, if the distance of distinct vision is 25 cm.

A simple microscope has a magnifying power of 4.125, when the image is formed at the distance of distinct vision. What is the focal power of the lens ?

SL ARORA-OPTICAL INSTRUMENTS-Problems for self practice
  1. A child has near point at 10 cm. What is the maximum angular magnifica...

    Text Solution

    |

  2. The magnification produced by the objective of a compound microscope i...

    Text Solution

    |

  3. A convex lens of focal length 5cm is used as a simple microscope. What...

    Text Solution

    |

  4. The focal lengths of the objective and eye piece of a compound microsc...

    Text Solution

    |

  5. The focal lengths of the objective and the eyepiece of a compound micr...

    Text Solution

    |

  6. The focal lengths of the objective and eye piece of a microscope are 2...

    Text Solution

    |

  7. A compound microscope is made using a lens of focal 10 mm as objective...

    Text Solution

    |

  8. An astronomical telescope having a magnifying power of 8 consists of t...

    Text Solution

    |

  9. A telescope has an objective of focal length 200 cm and eyepiece of fo...

    Text Solution

    |

  10. A telescope consists of an objective of focal length 50 cm and an eyep...

    Text Solution

    |

  11. An astronimical telescope is to be designed to hve a magnifying power ...

    Text Solution

    |

  12. A telescope has an objective of focal length 30 cm and an eye piece of...

    Text Solution

    |

  13. The focal length of the objective of an astronomical telescope is 1.0 ...

    Text Solution

    |

  14. The diameter of the moon is 3.5 xx 10^(3)km and its distance from the ...

    Text Solution

    |

  15. On seeing with unaided eye, the visual angle of moon at the eye is 0.6...

    Text Solution

    |

  16. A telescope objective lens has a focal length of 100 cm . When the fin...

    Text Solution

    |

  17. A refracting telescope has an objective of focal length 1 m and an eye...

    Text Solution

    |

  18. The eye-piece of an astronomical telescope has focal length of 10 cm. ...

    Text Solution

    |

  19. How would you combine two lenses of focal lengths 25 cm and 2.5 cm to ...

    Text Solution

    |

  20. A terrestrial telescope consists of three convex lenses in row whose f...

    Text Solution

    |