Home
Class 12
PHYSICS
If the central portion of a convex lens ...

If the central portion of a convex lens is wrapped in black paper as shown in figure

A

No image will be formed by the remaining portion of the lens

B

The full image be formed but it will be less bright

C

The central portion of the image will be missing

D

There will be two images each produced by one of the exposed portions of the lens.

Text Solution

Verified by Experts

The correct Answer is:
B
Since aperture of lens reduces so brightness will reduce but there will be no effect on size of image
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    A2Z|Exercise Prism Theory And Dispersion Of Light|45 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Optical Instruments|55 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • MAGNETISM AND MATTER

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

If the top half of a convex lens is covered with black paper

The central hollow portion of vertebra is

A convex lens is a diverging lens.

A leaf of destarched healthy potted plant was covered by black paper strip as shown in Figure I, and kept in sunlight in the morning. In the evening, it was plucked off and tested for the presence of starch by using iodine solution. The observation is matched with the Figure No.:

An object is placed at a point distant x from the focus of a convex lens and its imge is formed at I as shown in the figure. The distance x, x’ satisfy the relation

A2Z-GEOMETRICAL OPTICS-Refraction At Curved Surface
  1. A lens is placed between a source of light and a wall. It forms images...

    Text Solution

    |

  2. A combination of two thin lenses with focal lengths f(1) and f(2) resp...

    Text Solution

    |

  3. If the central portion of a convex lens is wrapped in black paper as s...

    Text Solution

    |

  4. A diminished image of an object is to be obtained on a screen 1.0 m fr...

    Text Solution

    |

  5. In figure, an air lens of radius of curvature of each surface equal to...

    Text Solution

    |

  6. A lens ( focal length 50 cm ) forms the image of a distant object whic...

    Text Solution

    |

  7. A convex lens of focal length 12 cm is made of glass of mu=(3)/(2). Wh...

    Text Solution

    |

  8. A concave lens of glass, refractive index 1.5 has both surfaces of sam...

    Text Solution

    |

  9. A convex lens if in contact with concave lens. The magnitude of the ra...

    Text Solution

    |

  10. An equiconvex lens of glass of focal length 0.1 meter is cut along a ...

    Text Solution

    |

  11. A thin lens made of a material of refractive index mu(0) has a focal l...

    Text Solution

    |

  12. A thin made of glass of refractive index 1.5 has a front surface +11 D...

    Text Solution

    |

  13. Let f(v) and f(r) are the focal lengths of a convex lens for violet an...

    Text Solution

    |

  14. A convex lens has a focal length f. It is cut into two parts along the...

    Text Solution

    |

  15. A concave lens forms the image of an object such that the distance bet...

    Text Solution

    |

  16. An object has image thrice of its original size when kept at 8 cm and ...

    Text Solution

    |

  17. A convex lens produces a real image m times the size of the object. Wh...

    Text Solution

    |

  18. A convex lens is made up of three different materials as shown in the ...

    Text Solution

    |

  19. An object is placed 12 cm to the left of a converging lens of focal le...

    Text Solution

    |

  20. An equiconvex lens is cut into two halves along (i) XOX^(') and (ii) Y...

    Text Solution

    |