Home
Class 12
PHYSICS
In an astronomical telescope in normal a...

In an astronomical telescope in normal adjustment a straight black line of length `L` is drawn on inside part of objective lens. The eye piece forms a real image of this line. The length of this image is `I`. The magnification of the telescope is

A

`L/l`

B

`L/l+1`

C

`L/l-1`

D

`(L+1)/(L-l)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MOTION OF CHARGED PARTICLES

    D MUKHERJEE|Exercise All Questions|48 Videos

  • PRACTICE WORKSHEET 1

    D MUKHERJEE|Exercise Matrix-Matching Type|1 Videos

Similar Questions

Explore conceptually related problems

When as tronomical telescope is adjusted for normal adjustment the finla image is formed at

In an astronomical telescope, the final image for normal vision is formed at

The image formed by the telescope in normal adjustment position is at

An astronomical telescope arranged for normal adjustment has a magnification of 6. If the length of the telescope is 35cm, then the focal lengths of objective and euye piece respectivley =, are

The focal length of objective and eye-piece of a telescope are 100 cm and 5 cm respectively. Final image is formed at least distance of distinct vision. The magnification of telescope is

In an astronomical telescope, focal length of eye piece is 5 cm and focal length of objective is 75 cm . The final image is formed at the least distance of distinct vision (=25 cm) from the eye. What is the magnifying power of the telescope ?

D MUKHERJEE-OPTICS-All Questions
  1. An astronomical telescope has an angular magnification of magnitude 5 ...

    Text Solution

    |

  2. An astronomical telescope in normal adjustment receives light from a d...

    Text Solution

    |

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

    Text Solution

    |

  4. If epsi(0) and mu(0) are respectively, the electric permittivity and t...

    Text Solution

    |

  5. Light of wavelength lambda in air enters a medium of refractive index ...

    Text Solution

    |

  6. Two coherent monochromatic light beams of intensities I and 4I are sup...

    Text Solution

    |

  7. In a Young's double-slit expriment using identical slits, the intensit...

    Text Solution

    |

  8. In Young's interference experiment, the central bright fringe can be i...

    Text Solution

    |

  9. In Young's interference experiment, if the slit are of unequal width, ...

    Text Solution

    |

  10. In a Young's double-slit experment, the fringe width is beta. If the e...

    Text Solution

    |

  11. In a Young's double-slit experiment, let S(1) and S(2) be the two slit...

    Text Solution

    |

  12. A brid flies down vertically towards a water surface. To a fish inside...

    Text Solution

    |

  13. A swimmer S inside water is vertically above a fixed point P. A rectan...

    Text Solution

    |

  14. A stationary swimmer S, inside a liquid of refractive index mu(1), is ...

    Text Solution

    |

  15. T is a point at the bottom of a tank filled with water, as shwon. The ...

    Text Solution

    |

  16. A ray of light travels from a medium of refractive index mu to air. It...

    Text Solution

    |

  17. A beam of light consisting of red, green and blue colours is incident ...

    Text Solution

    |

  18. A ray of light travelling in a transparant medium falls on a surface s...

    Text Solution

    |

  19. There is a small black dot at the centre C of a solid glass sphere of ...

    Text Solution

    |

  20. A watch glass has uniform thickness, and the average radius of curvatu...

    Text Solution

    |