Home
Class 12
PHYSICS
Two convex lenses placed in contact form...

Two convex lenses placed in contact form the image of a distant object at P. If the lens B is moved to the right, the image will

A

move to the left

B

move to the right

C

remain at P

D

move either to the left or right, depending upon focal lengths of the lenses.

Text Solution

Verified by Experts

The correct Answer is:
b.

Power of the system decreases due to separation between the lenses. So, the focal length increases.
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Assertion-Reasoninig|2 Videos
  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Linked Comprehension|51 Videos
  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|26 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

A convex lens forms an image of an object on a screen 30 cm from the lens. When the lens is moved 90 cm towards the object, then the image is again formed on the screen. Then, the focal length of the lens is

An unsymmeterical double convex thin lens forms the image of a point object on its axis. Will the position of the image change if the lens is reversed ?

A convex lens is placed in contact with a plane mirror. An axial point object at a distance of 20 cm from this combination, has its image coinciding with itself. What is the focal length of the convex lens ?

Two converging lenses have focal length f_1 and f_2 The optical axes of the two lenses coincide. This lens system is used to form an image of an object . It is observed that the size of the image does not depend on the distance between the system and object . The distance between lenses is

An object is at a distance of 20 m form a convex lens of focal length 0.3m The lens forms an image of the object moves away form the lens at a speed of 5m//s the speed and direction of the image will be :

An object to the left of a lens is imaged by the lens on a screen 30cm to the right of the lens. When the lens is moved 5cm to the right, the screen must be moved 5cm to the left to refocus the images. The focal length of lens is :-

A convex lens forms a real image of an object for its two different positions on a screen. If height of the image in both the cases be 8 cm and 2 cm , then height of the object is

An object is placed 30cm away from a convex lens of focal length 10cm and a sharp image is formed on a screen. Now, a convex lens is placed In contact with the convex lens. The screen now has to be moved by 45cm to get a sharp image again. The magnitude of focal length of the convex lends in (in cm)

A convex lens forms an image of an object placed 20cm away from it at a distance of 20cm on the other side of the lens. If the object is moves 5cm toward the lens, the image will be

In displacement method, convex lens forms a real image of an object for its two different positions. If heights of the images in two cases be 24 cm and 6 cm, then the height of the object is

CENGAGE PHYSICS ENGLISH-GEOMETRICAL OPTICS-Single Correct
  1. A cubic container is filled with a liquid whose refractive index incre...

    Text Solution

    |

  2. A lens forms a virtual, diminished image of an object placed at 2m fro...

    Text Solution

    |

  3. Two convex lenses placed in contact form the image of a distant object...

    Text Solution

    |

  4. An equiconvex lens in cut into two halves along (i) XOX' f,f',f'' be t...

    Text Solution

    |

  5. A spherical mirror forms an image of magnification3. The object distan...

    Text Solution

    |

  6. The critical angle of light from medium A to medium B is theta. The sp...

    Text Solution

    |

  7. An object 15cm high is placed 10cm from the optical center of a thin l...

    Text Solution

    |

  8. a convex lens of power +6 dioptre is placed in contact with a concave ...

    Text Solution

    |

  9. A convex lens of focal length 1.0 m and a concave lens of focal length...

    Text Solution

    |

  10. A convex lens A of focal length 20cm and a concave lens G of focal le...

    Text Solution

    |

  11. A convex lens forms an image of an object placed 20cm away from it at ...

    Text Solution

    |

  12. With a concave mirrorr, an object is placed at a distance x(1) from th...

    Text Solution

    |

  13. A concave mirror is placed on a horizontal table with its axis directe...

    Text Solution

    |

  14. A plane mirror is made of glass slab (mu(g)=1.5) 2.5 cm thick and silv...

    Text Solution

    |

  15. A point source of light S, placed at a distance L in front of the cen...

    Text Solution

    |

  16. An object is object at a distance of 25cm from the pole of a convex mi...

    Text Solution

    |

  17. When an object is kept at a distance of 30 cm from a concave mirror, t...

    Text Solution

    |

  18. A convex mirror of radius of curvature 1.6m has an object placed at a ...

    Text Solution

    |

  19. In the above question, the magnification is

    Text Solution

    |

  20. A convex and a concave mirror of radii 10 cm are placed facing each ot...

    Text Solution

    |