Home
Class 12
PHYSICS
The dispersive power of the material of ...

The dispersive power of the material of a lens is `0.04` and the focal length of the lens is `10cm`. Find the difference in the focal length (in mm) of the lens for violet and red colour.

Text Solution

Verified by Experts

The correct Answer is:
4
N//a
Promotional Banner

Topper's Solved these Questions

  • GEOMATRICAL OPTICS

    RESONANCE ENGLISH|Exercise Exercise-3|80 Videos

  • GEOMATRICAL OPTICS

    RESONANCE ENGLISH|Exercise Advance level Problems|35 Videos

  • GEOMATRICAL OPTICS

    RESONANCE ENGLISH|Exercise Exercise-1|141 Videos

  • EXPERIMENTAL PHYSICS

    RESONANCE ENGLISH|Exercise PART -II|10 Videos

  • GRAVITATION

    RESONANCE ENGLISH|Exercise HIGH LEVEL PROBLEMS|16 Videos

Similar Questions

Explore conceptually related problems

Find the focal length of the lens shown in Fig.

Find the focal length of the lens shown in the Fig..

The power of a lens is -5 D. Find its focal length.

If the focal length of the lens is 20 cm, find the distance of the image from the lens in the following figure?

A focal length of a lens 10cm. What is power of a lens in dipotre?

If the focal length of objective lens is increased then magnifying power of

Find the power of a concave lens of focal length 2 m .

If the focal length of the objective lens is increased then Magnifying power

The focal length of a plano-concave lens is -10 cm , then its focal length when its palne surface is polished is

RESONANCE ENGLISH-GEOMATRICAL OPTICS -Exercise-2
  1. An object O is kept in air and a lens of focal length 10 cm (in air) i...

    Text Solution

    |

  2. A stationary observer O looking at a fish (in water of mu=4//3 ) throu...

    Text Solution

    |

  3. The dispersive power of the material of a lens is 0.04 and the focal l...

    Text Solution

    |

  4. The image formed by a concave mirror is twice the size of the object. ...

    Text Solution

    |

  5. Which of the following statements are incorrect for spherical mirror.

    Text Solution

    |

  6. A ray of monochromatic light is incident on the plane surface of separ...

    Text Solution

    |

  7. For refractin of light through a prism

    Text Solution

    |

  8. An equilateral prism deviates a ray through 45^(@) for the two angles ...

    Text Solution

    |

  9. Two refracting media are separated by a spherical interfaces as shown ...

    Text Solution

    |

  10. The values of d(1) & d(2) for final rays to be parallel to the princip...

    Text Solution

    |

  11. An object O is kept infront of a converging lens of focal length 30 cm...

    Text Solution

    |

  12. If a symmetrical bi-concave thin lens is cut into two identical halves...

    Text Solution

    |

  13. A narrow beam of white light goes through a slab having parallel faces...

    Text Solution

    |

  14. By properly combining two prisms made of different materials, it is po...

    Text Solution

    |

  15. A plane mirror M is arranged parallel to a wall W at a distance l from...

    Text Solution

    |

  16. A man washign to get a picture of a Zebra photographed a white donkey ...

    Text Solution

    |

  17. An equiconvex lens of refractive index n(2) is placed such that the re...

    Text Solution

    |

  18. In the figure shown , a point object O is placed in air on the princip...

    Text Solution

    |

  19. An object is kept on the principal axis of a convex mirror of focal le...

    Text Solution

    |

  20. A real object is placed infront of a convex mirror (focal length f). I...

    Text Solution

    |