Home
Class 11
PHYSICS
The objective of astronomical telescope ...

The objective of astronomical telescope has

A

large aperture and large focal length

B

small apetture and small focal length

C

small of aperture and larger focal length .

D

large aperture and small focal length

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    TARGET PUBLICATION|Exercise CRITICALTHINKING|38 Videos
  • RAY OPTICS

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|68 Videos
  • OPTICS

    TARGET PUBLICATION|Exercise EXERCISE|447 Videos
  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

Similar Questions

Explore conceptually related problems

The focal length of objective and eye-piece of astronomical telescope are 2 m and 5 cm respectively. The magnifying power of telescope when final image is formed at infinity is

Explain the working of an astronomical telescope using refraction of light.

Answer the following questions : Explain the working of an astronomical telescope using refraction of light .

The objective of reflecting telescope is

Explain the following with the help of a diagram: Explain the working of an astronomical telescope using refraction of light.

The length (L) of the astronomical telescope, for normal adjustment is

Magnifying power of an astronomical telescope is M.P. If the focal length of the eye-piece is doubled, then its magnifying power will become

What is the use of astronomical telescope?

The objective of telescope A has a diameter 3 times that of the objective of telescope B . How much greater amount of light is gathered by A compared to B ? Show that range of A is three times the range of B .

TARGET PUBLICATION-RAY OPTICS-EVALUATION TEST
  1. The objective of astronomical telescope has

    Text Solution

    |

  2. When image is fomred by reflaction, the field of veiw is maximum for

    Text Solution

    |

  3. A candle flame 2 cm high is placed at distance of 2 meter from a wall....

    Text Solution

    |

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

    Text Solution

    |

  5. Assertion : If objective and eye lens of a mcroscope are interchanged ...

    Text Solution

    |

  6. The convex surface of a thin concavo-convex lens of glass of refractiv...

    Text Solution

    |

  7. Focal length of a convex/ concave mirror depends on

    Text Solution

    |

  8. A convex lens focal lenghts 30 cm made of glass of refractive index 1....

    Text Solution

    |

  9. Magnifying power of a telescope in normal adjustment when final images...

    Text Solution

    |

  10. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

    Text Solution

    |

  11. Assertion : If radius of curvature of mirror is doubled, focal length ...

    Text Solution

    |

  12. An experiment needs to heat a small sample to 700 K, but the only avai...

    Text Solution

    |

  13. Assertion : A dentist uses a convex mirror to examine a small cavity i...

    Text Solution

    |

  14. A man with normal near- point (25c m) reads a book with small print us...

    Text Solution

    |

  15. For a given compound microscope, increase in length of tube

    Text Solution

    |

  16. Which of the following (referred to a spherical mirror) do (does) not ...

    Text Solution

    |

  17. Assertion : A single lens produces a coloured image of an object illum...

    Text Solution

    |