Home
Class 11
PHYSICS
An astronomical telescope has an angular...

An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and the eyepiece is 36 cm and the final image is formed at infinity. The focal length `f_(0)` of the objective and the focal length `f_(0)` of the eyepiece are

A

`f_(o)=45cmandf_(e)=-9cm`

B

`f_(o)=7.2cmandf_(e)=5cm`

C

`f_(o)=50cmandf_(e)=10cm`

D

`f_(o)=30cmandf_(e)=6cm`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise CRITICALTHINKING|34 Videos

  • MEASUREMENTS

    TARGET PUBLICATION|Exercise EVALUATION TEST|17 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos

Similar Questions

Explore conceptually related problems

An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and eyepiece is 36cm and the final image is formed at infinity. Determine the focal length of objective and eyepiece.

An astronomical telescope has angular magnification m=7 for distant object. Distance between objective and eyepeice is 40 cm. final image is formed at infinitely focal length of objective and eyepeice respectively are

An astronomical telscope has an eyepiece of focal-length 5 cm. If the angular magnification in normal adjustment is 10, the distance between the objective and eyepiece in cm is

An astronomical telescope if ten -fold angular magnification has a length of 44 cm. The focal length of the objective is

An astronomical telescope of ten-fold angular magnification has a length of 44 cm . The focal length of the objective is

TARGET PUBLICATION-RAY OPTICS-COMPETITIVE THINKING
  1. A compound micrscope consists of an objective of focal length 1.0 cm ...

    Text Solution

    |

  2. An obsever looks at a distant tree of height 10m with a telescope of m...

    Text Solution

    |

  3. An astronomical telescope has an angular magnification of magnitude 5 ...

    Text Solution

    |

  4. On which of the following does the magnifying power of a telescope dep...

    Text Solution

    |

  5. The number of lenses in a terrestrial telescope is

    Text Solution

    |

  6. To avoid spherical aberration, quality reflecting telescopes use mirro...

    Text Solution

    |

  7. An astronomical telesope has objective and eyepiece of focal lengths 4...

    Text Solution

    |

  8. A telescope using an eye piece of focal length 3 cm has a magnificatio...

    Text Solution

    |

  9. In an astronomical telescope in normal adjustment a straight black lin...

    Text Solution

    |

  10. The ratio of the diameter of the sun to the distance between the earth...

    Text Solution

    |

  11. A point object is held above a thin equiconvex lens at its focus. The ...

    Text Solution

    |

  12. A concave lens of glass, refractive index 1.5 has both surfaces of sam...

    Text Solution

    |

  13. Given a point source of light, which of the following can produce a pa...

    Text Solution

    |

  14. An infinitely long rod lies along the axis of a concave mirror of foca...

    Text Solution

    |

  15. Diameter of a plano-convex lens is 6cm and thickness at the centre is ...

    Text Solution

    |

  16. The image of an object, forme by a plano-convex lens at a distance of ...

    Text Solution

    |

  17. By placing a comvex lens of focal length equal to 15.0 cm between an o...

    Text Solution

    |

  18. For a normal eye, the cornea of eye provides a converging power of 40 ...

    Text Solution

    |

  19. A person can see objects clearly only when they lie between 50cm and ...

    Text Solution

    |

  20. The focal length of a plano-convex lens is f and its refractive index ...

    Text Solution

    |