Home
Class 10
PHYSICS
Defect of vision that cannot be correcte...

Defect of vision that cannot be corrected by spectacles is:

A

Myopia

B

presbyopia

C

cataract

D

hypermetropia

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    MBD|Exercise EXAMPLE|118 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    MBD|Exercise EXAMPLE|94 Videos

Similar Questions

Explore conceptually related problems

What is Accomodation of eye? Write various defects of vision and their cause. How the eye of person suffering from nearsightedness and farsightedness may be corrected ?

A person can see clearly only up to 3 m.What type of defect a person have ? Prescribe a lens for his spectacles, so that he can see clearly up to 12 m.

In the given diagram which defect of the human eye is being corrected using a concave lens?

Which defect of human eye is being corrected in the figure given below?

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: Frenkel and Schottky defects are stoichiometric defects REason:Both defects change the density of the crystalline solid.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In Frenkel defect no density of hte crytalline solid does not change. Reason: In Frenkel defect no cation or anion leaves the crystal.

MBD-LIGHT:REFLECTION AND REFRACTION-EXAMPLE
  1. Parallel rays incident on a mirror,after reflection converge at a poin...

    Text Solution

    |

  2. The unit of power of lens is…… .

    Text Solution

    |

  3. Power of a lens is -5d, its focal length is:

    Text Solution

    |

  4. Which of the following lenses would you prefer to use while reading sm...

    Text Solution

    |

  5. Shaving mirrors are-

    Text Solution

    |

  6. Which of the following is the property of light?

    Text Solution

    |

  7. Twinkling of stars is due to atmospheric:

    Text Solution

    |

  8. Defect of vision that cannot be corrected by spectacles is:

    Text Solution

    |

  9. Which one of the following material cannot be used to make a lens?

    Text Solution

    |

  10. Where should object be placed in front of a convex lens to get real im...

    Text Solution

    |

  11. A spherical mirror and a thin spherical lens have each a focal length ...

    Text Solution

    |

  12. No matter how far you stand from a mirror,your image appear erect.The ...

    Text Solution

    |

  13. The refractive index of diamond is:

    Text Solution

    |

  14. A ray of light travelling in a glass merges into air, it will bend:

    Text Solution

    |

  15. A concave mirror forms image inverted and equal in size, when object i...

    Text Solution

    |

  16. A…………. Mirror is used to see the rear view in cars.

    Text Solution

    |

  17. The ratio of sine of angle of incidence to the sine of angle of refrac...

    Text Solution

    |

  18. When a beam of light passes form optically rarer medium to optically d...

    Text Solution

    |

  19. …is the unit of power of the lens

    Text Solution

    |

  20. A virtual and enlarged image is formed by a …….mirror.

    Text Solution

    |