Home
Class 11
PHYSICS
A concave lens and a convex lens have sa...

A concave lens and a convex lens have same focal length of `20 cm` and both put in contact this combination is used to view an object `5 cm` long kept at `20 cm` from the lens combination. As compared to object the image will be

A

magnified and inverted.

B

reduced and erct

C

of the same size as the object and erect

D

of the same size as the object but inverted

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|60 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • MEASUREMENTS

    TARGET PUBLICATION|Exercise EVALUATION TEST|17 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos

Similar Questions

Explore conceptually related problems

A convex lens and a concave lens, each having same focal length of 25 cm , are put in contact to form a combination of lenses. The power in diopters of the combination is

A thin convex lens of focal length 10 cm and a thin concave lens of focal length 26.2 cm are in contact. The combination acts as

A convex lens of power 2 D and a concave lens of focal length 40cm are kept in contact, find (a) Power of combination , (b) Equivalent focal length

A concave lens of focal length 12 cm and a convex lens of focal length 20 cm are kept in contact with each other . Find the focal length of the combination .

A convex lens of focal length 25 cm and a concave lens of focal length 10 cm are joined together. The power of the combination will be

A concave lens of focal length 12 cm and a convex lens of focal length 20 cm are kept in contact with each other . What will be the behavour of the combination /

A convex lens has a focal length of 20 cm. It is used to form an image of an object placed 15 cm from lens. The image is

A convex lens has 9 cm focal length and a concave lens has – 18 cm focal length. The focal length of the combination in contact will be

A convex lens of power +2.5 D is in contact with a concave lens of focal length 25 cm. The power of combination is

TARGET PUBLICATION-RAY OPTICS-CRITICALTHINKING
  1. When two thin lenses are kept in contanct, the focal length of the com...

    Text Solution

    |

  2. When two or more lnses of magnification m(1) ,m(2), m(3) are kept in c...

    Text Solution

    |

  3. A concave lens and a convex lens have same focal length of 20 cm and b...

    Text Solution

    |

  4. If we need a magnification of 400 from compound microscope of tube len...

    Text Solution

    |

  5. When objects at different distances are seen by the eye, which of the ...

    Text Solution

    |

  6. If astronomical telescope of length 1.53m has magnifying powerof magni...

    Text Solution

    |

  7. When we view object of height 15 m with a telescop of magnifying power...

    Text Solution

    |

  8. The focal length of the objective and eye piece of a telescope are res...

    Text Solution

    |

  9. The objective of telescope A has a diameter 3 times that of the object...

    Text Solution

    |

  10. A fly is sitting on the objective of a telescop pointed to the moon ta...

    Text Solution

    |

  11. An object is placed at a distance u from a concave mirror and its real...

    Text Solution

    |

  12. The distance between an object and the screen is 75 cm. When a convex ...

    Text Solution

    |

  13. Two similar planoconvex lenses are combined together in three differen...

    Text Solution

    |

  14. A virtual cannot be caought on a screen, Yet when we see a virtual ima...

    Text Solution

    |

  15. When the wavelenght of the light used is increased, the focal length o...

    Text Solution

    |

  16. If two power of a thick lense is P(1) and that of a thin lens is P(2)...

    Text Solution

    |

  17. How will you arrange the two plane mirros so that whatever may be the ...

    Text Solution

    |

  18. An object is placed in front of a convex mirror at a distance of 50cm....

    Text Solution

    |

  19. A square wire of side 3.0 cm is placed 25 cm away from a concave mirro...

    Text Solution

    |

  20. If a lens is cut into two pieces perpendicular to the principal axis a...

    Text Solution

    |