Home
Class 12
PHYSICS
A Galilean telescope has objective and e...

A Galilean telescope has objective and eye`-` piece of focal lengths `200 cm` and `2cm` respectively. The magnifying power of the telescope for normal vision is

A

92

B

100

C

108

D

198

Text Solution

Verified by Experts

The correct Answer is:
2

m = `f_(0)/f_(e) = 200/2 `
`:. ` m=100
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE- 4|18 Videos
  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE- 4 One or more than one correct answer type|13 Videos
  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE-2 (H.W)(OPTICAL INSTRUMENTS ( TELESCOPES ))|5 Videos
  • NUCLEI

    NARAYNA|Exercise ASSERTION & REASON|5 Videos
  • SEMI CONDUCTOR DEVICES

    NARAYNA|Exercise Level-II (H.W)|36 Videos

Similar Questions

Explore conceptually related problems

A telescope has objective and eyepiece lenses of focal lengths 150 cm and 5 cm, respectively. Calculate the magnifying power of telescope when the final image is formed (a) at infinity and (b) at the least distance of clear vision.

A small telescope has an objective lens of focal length 150 cm and an eye piece of focal length 6.0 cm. The magnifying power of the telescope for distinct vision adjustment is:

A small telescope has an objective lens of focal length 144 cm and an eye-piece of focal length 6.0 cm . What is the magnifying power of the telescope ? What is the separation between the objective and the eye-piece ?

The focal lengths of the eyepiece and the objective of an astronimical telescope are 2 cm and 100 cm respectively. The magnifying power of the telescope for normal adjustment and the length of the telescope is

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

A small telescope has an objective lens of focal length 140 cm and eye piece of focal length 5.0 cm . What is the magnifying power of telescope for viewing distant objects when (a) the telescope is in normal adjustment (i.e. when the image is at infinity) (b) the final image is formed at the least distance of distinct vision (25 cm) .

Magnifying power of a Galilean telescope is given by

A telescope has an objective of focal length 100 cm and an eye-piece of focal length 5 cm. What is the magnifying power of the telescope when it is in normal adjustment?

A telescope has an objective of focal length 100 cm and an eyepiece of focal length 5 cm. What is the magnifying power of the telescope when the final image is formed at the least distance of distinct vision ?

NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE- 3
  1. The velocities of light in two different mediums are 2xx10^(8) ms^( -1...

    Text Solution

    |

  2. The critical angle for total internal reflection in diamond is 24.5^(@...

    Text Solution

    |

  3. When a glass lens with mu = 1.47 is immersed in a trough of liquid, it...

    Text Solution

    |

  4. A convex lens of refractive index 3/2 has a power of 2.5^(@). If it is...

    Text Solution

    |

  5. The position of an object placed 5 cm in front of concave mirror of ra...

    Text Solution

    |

  6. The speed of light in media M1 and M2 are 1.5 xx 10^8 m//s and 2.0 xx ...

    Text Solution

    |

  7. A ray of light is incident on a 60^(@) prism at the minimum deviation ...

    Text Solution

    |

  8. A lens haivng focal length and aperture of diameter d forms an image o...

    Text Solution

    |

  9. A Galilean telescope has objective and eye- piece of focal lengths 200...

    Text Solution

    |

  10. A far sighted person has his near point 50 cm. Find the power of lens ...

    Text Solution

    |

  11. A plano-convex lens fits exactly into a plano-concave lens. Their plan...

    Text Solution

    |

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

    Text Solution

    |

  13. If the focal length of the objective lens is increased then

    Text Solution

    |

  14. The angle of a prism is A . One of its refracting surfaces is silvered...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. Two identical thin planoconvex glass lenses (refractive index 1.5) eac...

    Text Solution

    |

  18. The refracting angle of a prism is A and refractive index of the mater...

    Text Solution

    |

  19. The angle of incidence for a ray of light at a refracting surface of a...

    Text Solution

    |

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

    Text Solution

    |