Home
Class 10
PHYSICS
Mark the statement True(T) or False (F)....

Mark the statement True(T) or False (F).When two lenses are placed in contact, the focal length of the combination is equal to the sum of the focal of the lenses.

Text Solution

Verified by Experts

The correct Answer is:
F
Promotional Banner

Topper's Solved these Questions

  • QUESTION BANK

    HC VERMA|Exercise QUESTION BANK |69 Videos

Similar Questions

Explore conceptually related problems

When two thin lenses are kept in contanct, the focal length of the combination is

Two lenses of power 15D and -3D are placed in contact. The focal length of the combination is a

Two lenses of power +12 and -2 dioptres are placed in contact. The combined focal length of the combination will be

Two thin lenses of power +6 D and -2 D are in contact. What is the focal length of the combination ?

Two thin lenses of power +4 D and -2 D are in contact. What is the focal length of the combination ?

Two thin lenses of power + 5D and - 3D are in contact. What is the focal length of the combination ?

Two thin lenses of focal lengths f_(1) and f_(2) are in contact. The focal length of this combination is

HC VERMA-REFLECTION OF LIGHT-QUESTION BANK
  1. A thin lens and a spherical mirror have a focal length of +15 cm each...

    Text Solution

    |

  2. A convex lens

    Text Solution

    |

  3. A convex lens forms a virtual image when an object is placed at a dist...

    Text Solution

    |

  4. An object is placed before a convex lens. The image formed

    Text Solution

    |

  5. An object is placed before a convex lens. The image formed

    Text Solution

    |

  6. A lens has a power of +0.5 D. It is

    Text Solution

    |

  7. A parallel beam of light falling on the eye gets focused on the retina...

    Text Solution

    |

  8. The combination responsible for admitting different amounts of light i...

    Text Solution

    |

  9. The muscles of the iris control the

    Text Solution

    |

  10. When the eye is focused on an object very far away, the focal length o...

    Text Solution

    |

  11. Other names for myopia are

    Text Solution

    |

  12. The inability among the elderly to see nearby objects clearly because ...

    Text Solution

    |

  13. Mark the statement True(T) or False (F).When a ray of light passes fro...

    Text Solution

    |

  14. Mark the statement True(T) or False (F).If a ray of light passes from ...

    Text Solution

    |

  15. Mark the statement True(T) or False (F).The central portion of a thin ...

    Text Solution

    |

  16. Mark the statement True(T) or False (F).The values of f and u for a co...

    Text Solution

    |

  17. Mark the statement True(T) or False (F).When two lenses are placed in ...

    Text Solution

    |

  18. Mark the statement True(T) or False (F).The number of cones in the hum...

    Text Solution

    |

  19. Mark the statement True(T) or False (F).When light rays are incident o...

    Text Solution

    |

  20. Mark the statement True(T) or False (F).For the myopic eye, the far po...

    Text Solution

    |