Home
Class 12
PHYSICS
A nearsighted person has a far-point loc...

A nearsighted person has a far-point located `7.5` m from the eye : What would be the power, if a contact lens were used ?

Promotional Banner

Topper's Solved these Questions

  • Nuclear Reactions

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|12 Videos

  • Particle Nature of Radiation

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|87 Videos

Similar Questions

Explore conceptually related problems

A farsighted person has a near point of 75 cm for one eye and a near point of 100 cm for the other .What pwers should corrective lenses have to allow the person to see an object clearly at a distance of 25cm.

A person with myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

A certain myopic person has a far point of 150 cm. What power of a corrective lens must have to allow him to see distant objects clearly ?

PUNJAB BOARD PREVIOUS YEAR PAPERS-Optical Instruments-EXERCISE
  1. Kumar’s near point is 40 cm.Find the nature and power of lens which wo...

    Text Solution

    |

  2. Mangal’s near point is 60 cm.Find the nature and power of lens which w...

    Text Solution

    |

  3. A nearsighted person has a far-point located 7.5 m from the eye : What...

    Text Solution

    |

  4. A nearsighted person has a far-point located 7.5 m from the eye : What...

    Text Solution

    |

  5. A certain myopic person has a far point of 150 cm. What power of a cor...

    Text Solution

    |

  6. A certain myopic person has a far point of 150 cm. If he is able to re...

    Text Solution

    |

  7. A person can see objects clearly, when they are farther than12.5m away...

    Text Solution

    |

  8. A person can see objects clearly, when they are farther than 12.5 m aw...

    Text Solution

    |

  9. Jaura’s far point of a myopic eye is 10 cm from the eye. Findthe natur...

    Text Solution

    |

  10. The near point of a person suffering from hypermetropia is 75 cm. calc...

    Text Solution

    |

  11. If aperson uses spectacles of Power +1.0 dioptre, what is the nearest ...

    Text Solution

    |

  12. If far point of myopic person is 50 cm in front of the eye, what is th...

    Text Solution

    |

  13. What is hypermetropia ?

    Text Solution

    |

  14. What is meant by presbyopia ?

    Text Solution

    |

  15. What is myopia ?

    Text Solution

    |

  16. Define resolving power of compound microscope.

    Text Solution

    |

  17. What is simple microscope? Find an expression for its magnification.

    Text Solution

    |

  18. Define resolving power of telescope.

    Text Solution

    |

  19. What is myopia? What are its causes? Name the type of the lens to corr...

    Text Solution

    |

  20. Define resolving power for a compound microscope. On what factors does...

    Text Solution

    |