Home
Class 12
PHYSICS
In Fig. what should be the value of d s...

In Fig. what should be the value of d so that image is formed on the object itself .

Text Solution

Verified by Experts

For convex lens `:v=(-15xx10)/(-15+10)=30cm`
The refracted rays from lens should fall normally on the mirror for the image to coincide with the object.
`d+20=v=30`
`rArr d=10cm`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|26 Videos

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Single Correct|221 Videos

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Exercise1.6|15 Videos

  • ELECTRON,PHONTS,PHOTOELECTRIC EFFECT & X-RAYS

    CENGAGE PHYSICS ENGLISH|Exercise dpp 3.3|15 Videos

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Thermal Power in Resistance Connected in Circuit|27 Videos

Similar Questions

Explore conceptually related problems

What should be the value of distance d so that final image is formed on the object itself. (Focal length of the lenses are written on the lenses.)

A diverging lens of focal length 20 cm and a converging mirror of focal length 10 cm are placed coaxially at a separation of 5 cm. Where should an object be placed so that a real image is formed at the object itself ?

A biconvex thin lens is prepared from glass (mu=1.5) , the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Whee should an object be placed before this lens so that the image is formed on the object itself?

A biconvex thin lens is prepared from glass (mu=1.5) , the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Whee should an object be placed before this lens so that the image is formed on the object itself?

A concave mirror of radius R is kept on a horizontal table. Water (refractive index =mu.) is poured into it up to a height h. Where should an object be placed so that its image is formed on itself ?

A charge Q is to be divided on two objects. What should be the values of the charges on the objects so that the force between the objects can be maximum?

A convex lens of focal length 20cm and another plano convex lens of focal length 40cm are placed co-axially . The plano convex lens is silvered on plane surface. What should be the distance (in cm) so that final image of the object 'O' is formed on O itself.

When we see an object the image formed on the retina is

A point object is kept between a plane mirror and a concave mirror facing each other. The distance between the mirrors is 22.5 cm . The distance between the mirrors is 20 cm. what should be the distance of the object from the concave mirror so that after two successive reflections the final image is formed on the object itself ? (consider first reflection from concave mirror).

A point object is placed in front of a silvered plano convex lens of refractive index n radius of curvature R , so that its image is formed on itself. Then the object distance is equal to

CENGAGE PHYSICS ENGLISH-GEOMETRICAL OPTICS-Exercise1.7
  1. Figure, shown two converging lenses. Incident rays are parallel to the...

    Text Solution

    |

  2. In Figure., find the position of final image formed.

    Text Solution

    |

  3. In Fig. what should be the value of d so that image is formed on the ...

    Text Solution

    |

  4. In Fig,, if the image of object O has to coincide with itself, then w...

    Text Solution

    |

  5. A convex lens of focal length 20cm is placed 10cm away from a second ...

    Text Solution

    |

  6. When an object is placed at the proper distance ot the left of a conve...

    Text Solution

    |

  7. A telephoto combination consists of convex lens of focal length 30cm a...

    Text Solution

    |

  8. A convex lens is cut in half along its principal axis and the two halv...

    Text Solution

    |

  9. A plano-convex lens is silvered on its plane side. The radius of curva...

    Text Solution

    |

  10. A convex lens of focal length 10cm is placed 30 cm in front of a secon...

    Text Solution

    |

  11. A concave mirror of focal length 30 cm is placed on the flat horizont...

    Text Solution

    |

  12. The convex side of a thin concavo-convex lens of glass of refractive i...

    Text Solution

    |

  13. The source is placed 30 cm from a convex lens which has a focal length...

    Text Solution

    |

  14. If final image after two refractions through the lens and one reflecti...

    Text Solution

    |

  15. A point object O is placed at a distance of 20 cm from a convex lens o...

    Text Solution

    |

  16. The focal length of a thin convex-lens is 30cm. At a distance of 10 cm...

    Text Solution

    |

  17. A plano-convex glass lens (mu(g)=3//2) of radius of curvature R=10cm i...

    Text Solution

    |

  18. On a horizontal plane mirror, a thin equiconvex lens of glass is place...

    Text Solution

    |

  19. A pin is placed 10cm in front of a convex lens of focal length 20cm, m...

    Text Solution

    |

  20. A convex lens of glass (mu=1.5) is formed by combining two surfaces of...

    Text Solution

    |