Home
Class 12
PHYSICS
The aperture of a telescope is made larg...

The aperture of a telescope is made large, because

A

increase the intensity of the image

B

decrease the intensity of image

C

have greater magnification

D

have lesser resolution

Text Solution

Verified by Experts

The correct Answer is:
A
(a) In a telescope large aperature of objective helps in improving the brightness (image) by gathering more light from disrtant object.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    DC PANDEY|Exercise Checkpoint 9.7|10 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Exercise|171 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Checkpoint 9.5|10 Videos

  • NUCLEI

    DC PANDEY|Exercise C MADICAL ENTRANCES GALLERY|46 Videos

  • REFLECTION OF LIGHT

    DC PANDEY|Exercise Subjective|9 Videos

Similar Questions

Explore conceptually related problems

The aperture of telescope is increases to

The aperture of the objective lens of a telescope is made large so as to

Large aperture of telescope are used for

If 'a' is the aperture of telescope and ' lamda ' is the wavelength of light then resolving power of telescope is ……………..

If the aperture of the objective of a telescope is decreased, then its resolving power

The aperture of the larges telescope in the world is about 5m. If the separation between the moon and the earth is 4xx10^(5)km and the wavelength of visible light is 6000Å , then minimum separation between the objects on the surface of the moon which can be just resolved is approximately equal to

The number of Carbon compounds is very large because it

DC PANDEY-RAY OPTICS-Checkpoint 9.6
  1. For a normal eye, the least distance of distinct vision is

    Text Solution

    |

  2. When we see an object, image formed on the retina is (i) real (ii) v...

    Text Solution

    |

  3. The focal length of a normal eye lens is about

    Text Solution

    |

  4. An object is placed at a distance u from a simple microscope of focal ...

    Text Solution

    |

  5. Magnifying power of a simple microscope is (when final image is formed...

    Text Solution

    |

  6. In a compound microscope, the intermediate image is

    Text Solution

    |

  7. A compound microscope has two lenses. The magnifying power of one is 5...

    Text Solution

    |

  8. The length of the compound microscope is 14 cm. The magnifying power f...

    Text Solution

    |

  9. If the focal length of objective and eye lens are 1.2 cm and 3 cm resp...

    Text Solution

    |

  10. The focal length of objective and eye lens of a microscope are 4 cm an...

    Text Solution

    |

  11. If the telescope is reversed .i.e., seen seen from the objective side,...

    Text Solution

    |

  12. The aperture of a telescope is made large, because

    Text Solution

    |

  13. In an astronomical telescope, the focal length of the objective lens i...

    Text Solution

    |

  14. The focal lengths of the objective and eye lenses of a telescope are r...

    Text Solution

    |

  15. The number of lenses in a terrestrial telescope is

    Text Solution

    |

  16. Magnifying power of a Galilean telescope is given by

    Text Solution

    |

  17. In Gallilean telescope, the final image formed is

    Text Solution

    |

  18. Reflecting telescope consists of

    Text Solution

    |

  19. Resolving power of a microscope is given by

    Text Solution

    |

  20. The resolving power of a telescope whose lens has a diameter of 1.22 m...

    Text Solution

    |