Home
Class 10
PHYSICS
Fill in the blanks : If two lenses wit...

Fill in the blanks :
If two lenses with focal lengths 10cm and 20 cm respectively are kept in contact with each other , the effective power of the combination is ………….

Text Solution

Verified by Experts

The correct Answer is:
15 D
Promotional Banner

Topper's Solved these Questions

  • LENSES

    NAVNEET PUBLICATION|Exercise EXERCISE|280 Videos

  • HEAT

    NAVNEET PUBLICATION|Exercise EXERCISE|135 Videos

  • REFRACTION OF LIGHT

    NAVNEET PUBLICATION|Exercise EXERCISE|141 Videos

Similar Questions

Explore conceptually related problems

Fill in the blanks : The power of a lens with focal length 20 cm is ………….

Two thin converging lenses of focal length 15 cm and 30 cm are held in contact with each other. The focal length of the combination is

If two convex lenses of focal lengths 10 cm and 5 cm are kept in contact with each other , What is their combined focal length ?

Answer the following questions : If two lenses of focal length f_1 and f_2 are kept in contact with each other , state the formula for the focal length of the combination . If p_1 and P_2 are the power of these lenses, state the formula for the power of the combination .

Two brass sphere of radii 5 cm and 10 cm are brought in contact with each other. Find the centre of gravity of the combination.

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

If a concave lens of focal length 12 cm and a convex lens of focal length 20 cm are kept in contact with each other . (i) Find be the focal length of the combination ? (ii) What will be the behaviour of the combination ?

Two lenses with focal length 20 cm and - 10 cm are placed together. Determine the power of combination.

NAVNEET PUBLICATION-LENSES-EXERCISE
  1. Fill in the blanks : The power of a lens with focal length 20 cm is ...

    Text Solution

    |

  2. Fill in the blanks : The minimum distance of distinct vision for a n...

    Text Solution

    |

  3. Fill in the blanks : If two lenses with focal lengths 10cm and 20 cm...

    Text Solution

    |

  4. Fill in the blanks : A …………… lens is used as a simple microscope.

    Text Solution

    |

  5. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  6. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  7. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  8. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  9. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  10. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  11. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  12. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  13. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  14. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  15. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  16. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  17. Choose the correct alternative and write it along with its alloted alp...

    Text Solution

    |

  18. State whether the following statements are true or false : ( If a stat...

    Text Solution

    |

  19. State whether the following statements are true or false : ( If a stat...

    Text Solution

    |

  20. State whether the following statements are true or false : ( If a stat...

    Text Solution

    |