Home
Class 12
PHYSICS
On what factors does the focal length o...

On what factors does the focal length of a lens depend?

Text Solution

Verified by Experts

The focal length of a lens depends on,
(a) refractive index of the given medium,
(b) refractive index of the surrounding medium,
(c) radii of curvature of the two surfaces of the lens, and
(d) wavelength of light used.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS WITH ANSWERS|10 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|22 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|22 Videos

  • QUESTION PAPER 2019

    SUBHASH PUBLICATION|Exercise PART - C|6 Videos

  • SEMICONDUCTOR ELECTRONICS

    SUBHASH PUBLICATION|Exercise OPTIONAL NUMERICALS WITH SOLUTIONS|6 Videos

Similar Questions

Explore conceptually related problems

On what factors does the stability of a nucleaus depend ?

On what factors does the resistance of a conductor depend?

On what factors does the resistance of a conductor depend?

The focal length of lens does not depend on :

On what factor does the stopping potential depend for a given photoemitter?

Express the relation between the power (P) and the focal length of a lens.

SUBHASH PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-TWO MARKS QUESTIONS WITH ANSWERS
  1. Write the expression for R.I. of the material of the prism for symmetr...

    Text Solution

    |

  2. Write the expression for the power of a lens in terms of powers of its...

    Text Solution

    |

  3. Write the formula for the equivalent focal length of two thin lenses s...

    Text Solution

    |

  4. How can the power of the combination expressed, if two lenses are equi...

    Text Solution

    |

  5. Two lenses having focal lengths +0.20 m and -0.30 m are separated by a...

    Text Solution

    |

  6. An extended object is placed at the principal focus of a lens. Where w...

    Text Solution

    |

  7. State Snell's law of refraction of light?

    Text Solution

    |

  8. Write Snell's law in general mathematical terms.

    Text Solution

    |

  9. Define the term angle of deviation.

    Text Solution

    |

  10. A riding glass though formed by spherical surfaces has zero power. Giv...

    Text Solution

    |

  11. What advantages has optical fibre communication over cable communicati...

    Text Solution

    |

  12. Draw a neat labelled diagram of a compound microscope and give the exp...

    Text Solution

    |

  13. Give any three differences between a compound microscope and a telesco...

    Text Solution

    |

  14. Draw a neat labelled diagram of image formed in a refracting telescope...

    Text Solution

    |

  15. Show that n=(1)/(sinC) where symbols have their usual notation.

    Text Solution

    |

  16. Mention the three factors affecting lateral shift.

    Text Solution

    |

  17. State the conditions for dispersion without deviation.

    Text Solution

    |

  18. Show that m=(f-v)/(f) for a lens.

    Text Solution

    |

  19. Show that m=(f)/(u+f) for a lens.

    Text Solution

    |

  20. On what factors does the focal length of a lens depend?

    Text Solution

    |