Home
Class 12
PHYSICS
A lady cannot see objects closer than 40...

A lady cannot see objects closer than `40cm` from the left eye and closer than `100cm` from the right eye. While on a mountaining trip, she is lose from her team. She tries to make an astronomical trip, from her reading glasses to look from her teammates. (a) Which glass should she use as the eyepiece? (b) What magnification can she get with relaxed eye?

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • OPTICAL INSTRUMENTS

    HC VERMA|Exercise Objective-2|1 Videos

  • MAGNETIC PROPERTIES OF MATTER

    HC VERMA|Exercise Exercises|9 Videos

  • PERMANENT MAGNETS

    HC VERMA|Exercise Exercises|25 Videos
HC VERMA-OPTICAL INSTRUMENTS-Exercises
  1. A simple microscope is rated 5 X for a normal relaxed eye. What Nvill ...

    Text Solution

    |

  2. Find the maximum magnifying power of a compound microscope having a 25...

    Text Solution

    |

  3. The separation between the objective and the eyepiece of a compound mi...

    Text Solution

    |

  4. An eye can distinguish between two points of an object if they are sep...

    Text Solution

    |

  5. A compound microscope has a magnifying power of 100 when the image is ...

    Text Solution

    |

  6. A compound microscope consists of an objective of focal length 1 cm an...

    Text Solution

    |

  7. An optical instrument used for angular magnification has a 25 D object...

    Text Solution

    |

  8. An astronimical telescope is to be designed to hve a magnifying power ...

    Text Solution

    |

  9. The eyepice of an astronomicasl telescope has a focasl length of 10 cm...

    Text Solution

    |

  10. A Galilean telescope is 27 cm long when focussed to form an image at i...

    Text Solution

    |

  11. A farsighted person cannot see objects placed closer to 50 cm. Find th...

    Text Solution

    |

  12. A nearsighted person cannot clearly see beyond 200 cm. Find the power ...

    Text Solution

    |

  13. A person wears glasses of power - 2.5 D. Is the person short sighted o...

    Text Solution

    |

  14. A professor reads a greeting card received on his 50th birthday with +...

    Text Solution

    |

  15. A normal eye has retina 2 cm behind the eye-lens. What is the power of...

    Text Solution

    |

  16. The near point and the far point of a child are at 10 cm and 100 cm. I...

    Text Solution

    |

  17. A nearsighted person cannot see beyond 25 cm. Assuming that the separa...

    Text Solution

    |

  18. A person has near point at 100 cm. What power of lens is needed to rea...

    Text Solution

    |

  19. A lady uses + 1.5 D glasses to have normal vision from 25 cm onwards. ...

    Text Solution

    |

  20. A lady cannot see objects closer than 40cm from the left eye and close...

    Text Solution

    |