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|68 Videos
  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos
  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos
  • OPTICS

    TARGET PUBLICATION|Exercise EXERCISE|447 Videos
  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

Similar Questions

Explore conceptually related problems

Find the power of a convex lens of focal length 40 cm.

Find the power of a convex lens of focal length 12.5 cm.

Calculate the power of convex lens of focal length 15 cm.

If two convex lenses of focal lengths 10 cm and 5 cm are kept in contact with each other , What is their combined focal length ?

The power of convex lens of focal length 50 cm is______

A convex lens has a focal length of 30 cm. An object is kept in front of it at a distance of 90 cm. Find the distance of the image from the lens. What type of image is formed?

If a concave lens of focal length 12 cm and a convex lens of focal length 20 cm are kept in contact with each other . (i) Find be the focal length of the combination ? (ii) What will be the behaviour of the combination ?

Find the focal length of a convex lens which produces a virtual image at 10 cm from the lens when an object is placed at 5 cm from the lens .

A plano-convex lens has focal length of 20 cm. the radius of its spherical suface is (""_(a) mu_(g)=1.5)

TARGET PUBLICATION-RAY OPTICS-CRITICALTHINKING
  1. As shown in the figure, the liquids L1, L2 and L3 have refractive indi...

    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. The lens shown in the figure drawn below is made of two different mate...

    Text Solution

    |