Home
Class 10
PHYSICS
(a) Is eye lens made of glass ? (b) Is...

(a) Is eye lens made of glass ?
(b) Is focal lengths of eye lens fixed ?

Text Solution

Verified by Experts

(a) No, eye lens is not made of glass. It is made of fibrous jelly like material.
(b) No, focal length of eye lens is adjustable.
Promotional Banner

Topper's Solved these Questions

  • THE HUMAN EYE AND COLOURFUL WORLD

    PRADEEP|Exercise (Additional)Short answer|45 Videos

  • THE HUMAN EYE AND COLOURFUL WORLD

    PRADEEP|Exercise (Additional)Long answer|10 Videos

  • THE HUMAN EYE AND COLOURFUL WORLD

    PRADEEP|Exercise (Exemplar)Long Answer|6 Videos

  • SOURCES OF ENERGY

    PRADEEP|Exercise Mock Test|20 Videos

Similar Questions

Explore conceptually related problems

Is focal length of eye lens fixed? If not, why?

Eye lens is

Focal length of eye lens is changed by

The eye lens is a

A plano - convex lens is made of flint glass. Its focal length is

The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54 cm . The focal length of eye lens and objective lens will be respectively

PRADEEP-THE HUMAN EYE AND COLOURFUL WORLD-(Additional)Very short answer
  1. Which defect of vision can be rectified using a convex lens ?

    Text Solution

    |

  2. Which defect of vision can be rectified using a concave lens ?

    Text Solution

    |

  3. When is a person said to have developed cataract in his eye ? How is t...

    Text Solution

    |

  4. Which defect of the eye can be corrected using a cylindrical lens ?

    Text Solution

    |

  5. Which colour has largest wavelength ?

    Text Solution

    |

  6. Which colour suffers least deviation on passing through a prism ?

    Text Solution

    |

  7. Name the phenomenon which causes the twinkling of stars.

    Text Solution

    |

  8. Which phenomenon is responsiblefor increasing the apparent length of t...

    Text Solution

    |

  9. Why do stars seem higher than they actually are ? Illustrate your answ...

    Text Solution

    |

  10. What is persistence of vision ? Give one example of persistence of vi...

    Text Solution

    |

  11. The sun looks reddish at the time of sunrise and sunset.

    Text Solution

    |

  12. (a) Is eye lens made of glass ? (b) Is focal lengths of eye lens fix...

    Text Solution

    |

  13. (a) What is aqueous homour ? (b) What is vitreous humour ?

    Text Solution

    |

  14. (a) What is meant by far point of human eye ? (b) What is meant by n...

    Text Solution

    |

  15. (a) For a normal eye, what is the least distance of distinct vision ? ...

    Text Solution

    |

  16. (a) Which lens is used for correcting a mypoic eye ? (b) Which lens ...

    Text Solution

    |

  17. Why are danger signals red in colour ?

    Text Solution

    |

  18. Why does clear sky appear blue ?

    Text Solution

    |

  19. Name the part of our eyes which helps us to focus near and distant obj...

    Text Solution

    |

  20. To an astronaut is a spcaceship, the sky appears

    Text Solution

    |