Home
Class 12
PHYSICS
The focal lengths of the objective and e...

The focal lengths of the objective and eye lens of a microscope are 1 cm and 5 cm, respectively. If the magnifying power for the relaxed eye is 45, then the length of the tube is

A

30 cm

B

25 cm

C

15 cm

D

12 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • OPTICAL INSTRUMENTS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE -I) (OPTICAL INSTRUMENTS) (LEVEL-I (MAIN)) (SUBJECTIVE OBJECTIVE TYPE QUESTIONS)|21 Videos

  • NUCLEI

    AAKASH SERIES|Exercise Practice Exercise|40 Videos

  • PHYSICAL WORLD

    AAKASH SERIES|Exercise Exercise -I|10 Videos

Similar Questions

Explore conceptually related problems

The focal lengths of the objective and eye - lens of a microscope are 1cm and 5 cm respectively. If the magnifying power for the relaxed eye is 45 , then the length of the tube is

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

The focal lengths of objective and eye piece of a microscope are 1.25 cm and 5 cm respectively. Find the position of the object relative to the objective in order to obtain an angular magnification of 30 in normal adjustment.

The focal length of the objective and eye lenses of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity. What is the linear magnification ?

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

The separation between the objective and the eyepiece of a compound microscope can be adjusted between 9.8 cm to 11.8 cm. If the focal lengths of the objective and the eyepiece are 1.0 cm and 6 cm respectively, find the range of the magnifying power if the image is always needed at 24 cm from the eye.

AAKASH SERIES-OPTICAL INSTRUMENTS -PRACTICE SHEET (EXERCISE -I) (OPTICAL INSTRUMENTS) (LEVEL-I (MAIN)) (SUBJECTIVE OBJECTIVE TYPE QUESTIONS)
  1. The focal lengths of the objective and eye lens of a microscope are 1 ...

    Text Solution

    |

  2. A convergent lens of power 16D is used as a simple microscope. The mag...

    Text Solution

    |

  3. The maximum magnification that can be obtained with a convex lens of f...

    Text Solution

    |

  4. The objective lens of a compound microscope produces magnification of ...

    Text Solution

    |

  5. Four lenses A, B, C and D of power +100D, -50D, 20D and 5D. Which lens...

    Text Solution

    |

  6. A microscope consists of two convex lenses of focal lengths 2.0 cm and...

    Text Solution

    |

  7. When an object is placed 40cm from a diverging lens, its virtual image...

    Text Solution

    |

  8. The magnifying power of an astronomical telescope for normal adjustmen...

    Text Solution

    |

  9. A telescope, consisting of an objective of focal length 60 cm and a si...

    Text Solution

    |

  10. An astronimical telescope has an angular magnification of magnitude 5 ...

    Text Solution

    |

  11. If tube length Of astronomical telescope is 105cm and magnifying power...

    Text Solution

    |

  12. The focal length of the eyepiece and the objective of an astronomical ...

    Text Solution

    |

  13. A converging lens of 2.5cm focal length is used as a simple microscope...

    Text Solution

    |

  14. A compound microscope is of magnifying power 100". The magnifying powe...

    Text Solution

    |

  15. The minimum magnifying power of a telescope is M. If the focal length ...

    Text Solution

    |

  16. The magnifying power of an astronomical telescope for relaxed vision i...

    Text Solution

    |

  17. The focal length of objective and the eyepiece of a compound microscop...

    Text Solution

    |

  18. The magnifying power of an astronomical telescope is 8 and the distanc...

    Text Solution

    |

  19. The focal length of the objective of a terrestical telescope is 80cm ...

    Text Solution

    |

  20. A person cannot see objects clearly beyond 50.cm. The power of lens to...

    Text Solution

    |

  21. A person with a defective sight is using a lens having a power of +2D ...

    Text Solution

    |