Home
Class 10
PHYSICS
The image of a candle flame formed by a ...

The image of a candle flame formed by a lens is obtained on a screen placed on the other side of the lens. If the image is three times the size of the flame and the distance between lens and image is 80 cm., at what distance should be candle be placed from the lens? what is the nature of the image at a distance of 80 cm and the lens?

Promotional Banner

Topper's Solved these Questions

  • REFLECTION AND REFRACTION

    MODERN PUBLICATION|Exercise EXAMPLE|138 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    MODERN PUBLICATION|Exercise EXERCISE|265 Videos

  • SOURCES OF ENERGY

    MODERN PUBLICATION|Exercise EXAMPLE|92 Videos

Similar Questions

Explore conceptually related problems

The image of needle placed 45 cm from a lens is formed on a screen placed 90 cm on the otehr side of teh lens.Find the displacement of the image,if the object is moved to 5.0 cm away from the lens.

A needle placed 45cm from a lens forms an image on the screen placed 90cm on the other side of the lens. What is the type of lens ? Find the focal length. If the length of needle is 5cm. What is the length of image ?

A needle placed 40 cm from a lens forms an image on a screen placed 80 cm on the other side of the lens. Identify the type of lens and determine its focal length. What is the size of the image, if the size of needle is 15 cm ?

At what distance should be placed from a convex lens of focal length 15 cm to obtain an image three times the size of the object?

If the distance between the screen and object is 50 cm and the displacement of the lens is 10 cm,clculate the focal length of the lens.

A convex lens of power 4D is placed at a distance of 40 cm from a wall at what distance from the lens should a candle be placed so that its image is formed on the wall?

MODERN PUBLICATION-REFLECTION AND REFRACTION-EXAMPLE
  1. The image of a candle flame formed by a lens is obtained on a screen p...

    Text Solution

    |

  2. A concave mirror of focal length 20 cm forms a real image at a distanc...

    Text Solution

    |

  3. A convex mirror used on an automobile has a radius of curvature of 3 m...

    Text Solution

    |

  4. An object 1 cm high is place on the axis and 15 cm from a concave mirr...

    Text Solution

    |

  5. The image formed by a concave mirror is half in size of the object. If...

    Text Solution

    |

  6. An object 5 cm high is placed at a distance of 10 cvm from a convex mi...

    Text Solution

    |

  7. When an object is placed at a distance of 60 cm from a convex spherica...

    Text Solution

    |

  8. Find the position of an object which when placed in front of a concave...

    Text Solution

    |

  9. An object is placed 10 cm from a concave mirror of radius of curvature...

    Text Solution

    |

  10. An object is placed 15 cm from a convex mirror of radius of curvature ...

    Text Solution

    |

  11. A 4.5 cm needle is placed 12 cm away from a convex mirror of focal len...

    Text Solution

    |

  12. What is the speed of light?

    Text Solution

    |

  13. If refractive index of glass w.r.t. air is 1.55, then what is the refr...

    Text Solution

    |

  14. The refractive index of water is 4/3 and flint glass is 1.65. What is ...

    Text Solution

    |

  15. A ray of light passes from to air to glass at an angle of incidence of...

    Text Solution

    |

  16. Monochromatic light of wavelength 589 nm is incident from air on a wat...

    Text Solution

    |

  17. The refractive index of diamond is 2.42 and that of glass is 1.5. find...

    Text Solution

    |

  18. A ray of light of frequency of 5 xx 10^(14)Hz is passed through a liqu...

    Text Solution

    |

  19. Velocity of light in a medium is 1.5xx10^8 ms^-1. Find the refractive ...

    Text Solution

    |

  20. The refractive index of diamond is:

    Text Solution

    |

  21. A ray of light passes from air to glass. The glass of incidence is 45^...

    Text Solution

    |