Home
Class 11
PHYSICS
An obsever looks at a distant tree of he...

An obsever looks at a distant tree of height 10m with a telescope of magnifying power of 20. to the observer the tree appears:

A

10 times taller

B

10 times nearer

C

20 times taller

D

20 times nearer

Text Solution

Verified by Experts

The correct Answer is:
D

A telescope resolves and brings objects closer Hence with a telescope of magnifying power `20`, the tree appears `20` times nearer.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    PRADEEP|Exercise (Competition)Comprehension|7 Videos
  • RAY OPTICS

    PRADEEP|Exercise Integer Question|4 Videos
  • RAY OPTICS

    PRADEEP|Exercise (Exemplar) Multiple choice|16 Videos
  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions|7 Videos
  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise Assertion- Reason Type questions|20 Videos

Similar Questions

Explore conceptually related problems

When we view object of height 15 m with a telescop of magnifying power 10. the object appears _____

The focal length of the objective of an astronomical telescope is 1.0 m. If the magnifying power of the telescope is 20, find the focal length of the eyepiece and the length of the telescope for the relaxed eye.

At a given point of time, the heights of trees are in proportion to the lengths of the shadows of the trees. A tree of height 25.6 m casts a shadow of 32 m. if the shadow of another tree at that point of time is 48m, then find the height of that tree.

The horizontal distance between two trees of different heights is 60m.The angle of depression of the top of the first tree when seen from the top of the second tree is 45o .If the height of the second tree is 80m, find the height of the first tree.

PRADEEP-RAY OPTICS-(Competition)Multiple choice
  1. In an astronomical telescope in normal adjustment a straight black lin...

    Text Solution

    |

  2. The near and far points of a person are at 40 cm and 250cm respectivel...

    Text Solution

    |

  3. Assuming human pupil to have a radius of 0.25 cm and a comfortable vie...

    Text Solution

    |

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

    Text Solution

    |

  5. The focal length of the objective and eye piece of a telescope are res...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. The box of a pin hole camera, of length L, has a hole of radius a . It...

    Text Solution

    |

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

    Text Solution

    |

  10. A spherical surface of radius of curvature R separates air (refractive...

    Text Solution

    |

  11. A diminished image of an object is to be obtained on a screen 1.0 m fr...

    Text Solution

    |

  12. A short linear object of length b lies along the axis of a concave mir...

    Text Solution

    |

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

    Text Solution

    |

  14. A planet is observed by an astronomical refracting telescope having an...

    Text Solution

    |

  15. A student performed the experiment of determination of focal length of...

    Text Solution

    |

  16. A ray of monochromatic light is incident on one refracting face of a p...

    Text Solution

    |

  17. The optical length of an astronomical telescope with magnifying power ...

    Text Solution

    |

  18. A narrow beam of white light enters slab having parallel faces.

    Text Solution

    |

  19. Which of the following (referred to a sphericla mirror) do (does) not ...

    Text Solution

    |

  20. Photograph of the ground are taken form an air-craft ,flying at an alt...

    Text Solution

    |