Home
Class 12
PHYSICS
a) For the telescope described in Exerci...

a) For the telescope described in Exercise 34 (a), what is the separation between the objective lens and the eyepiece ?

Text Solution

Verified by Experts

Here, in normal adjustment, seperation between objective lens and eye lens ltbr. `=f_(0)+f_(e)=140+5=145cm`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICAL AND INSTRUMENTS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise LONG ANSWER QUESTIONS|10 Videos

  • NUCLEI

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise DAM SURE (VSAQ)|1 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES , AND SIMPLE CIRCUITS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise ADDITIONAL EXERCISES|8 Videos

Similar Questions

Explore conceptually related problems

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

What is the distance between the lens and retina of eye ?

What is the relation between Power and Focal length of the lens ?

A person with a normal near point (25 cm) using a compound microscope with objective of focal length 8.0 mm and an eyepiece of focal length 2.5cm can bring an object placed at 9.0mm from the objective in sharp focus. What is the separation between the two lenses? Calculate the magnifying power of the microscope,

The objective and eyepiece of an astronomical telescope are double convex lenses with refractive index 1.5. When the telescope is adjusted to infinity, the separation between the two lenses is 16 cm. If the space between the lenses is now filled with water and again telescope is adjusted for infinity, then the present separation between the lenses is

A double convex lens of focal length 15 cm is used as a magnifying glass in order to produce an erect image which is 3 times magnified. What is the distance between the object and the lens ?

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-RAY OPTICAL AND INSTRUMENTS-TEXTUAL EXERCISES
  1. A card sheet divided into squares each of size "1 mm"^(2) is being vi...

    Text Solution

    |

  2. A card sheet divided into squares each of size "1 mm"^(2) is being vi...

    Text Solution

    |

  3. a) At what distance should the lens be held from the figure in Exercis...

    Text Solution

    |

  4. b) What is the magnificiation in this case ?

    Text Solution

    |

  5. c) Is the magnification equal to the magnifying power in this case ? E...

    Text Solution

    |

  6. What should be the distance between the object in Exercise 30 and the ...

    Text Solution

    |

  7. a) The angle subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  8. b) In viewing through a magnifying glass, one usually positions one's ...

    Text Solution

    |

  9. c) Magnifying power of a simple microscope is inversely proportional t...

    Text Solution

    |

  10. d) Why must both the objective and the eyepiece of a compound microsco...

    Text Solution

    |

  11. e) When viewing through a compound microscope, our eyes should be posi...

    Text Solution

    |

  12. An angular magnification (magnifying power) of 30 X is desired using a...

    Text Solution

    |

  13. A small telescope has an objective lens of focal length 140 cm and an ...

    Text Solution

    |

  14. A small telescope has an objective lens of focal length 140 cm and an ...

    Text Solution

    |

  15. a) For the telescope described in Exercise 34 (a), what is the separat...

    Text Solution

    |

  16. b) If this telescope is used to view a 100 m tall tower 3 km away, wha...

    Text Solution

    |

  17. c) What is the height of the final image of the tower if it is formed ...

    Text Solution

    |

  18. A cassegrain telescope is built with the mirrors 20 mm apart. If the r...

    Text Solution

    |

  19. Light incident normally on a plane mirror attached to a galvanometer c...

    Text Solution

    |

  20. Figure shows an equiconvex lens (of refractive index 1.50) in contact ...

    Text Solution

    |