Home
Class 12
PHYSICS
A point source of light B,placed in fron...

A point source of light B,placed in front of the centre of a mirror of width d,hangs vertically on a wall.A man walds in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown in the figure.The gretest distance over which he can see the image of the light source in the mirror is

A

`d//2`

B

`d`

C

`3d`

D

`4d`.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • UNIT TEST -06

    MODERN PUBLICATION|Exercise EXERCISE|461 Videos

  • TEXUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|195 Videos

  • UNIT TEST -07

    MODERN PUBLICATION|Exercise EXERCISE|154 Videos

Similar Questions

Explore conceptually related problems

The image of an object placed at a point before a plane mirror LM is seen at the point B by an observer at D as shown in the given fig. Prove that the image is as far behind the mirror as the object is in front of the mirror.

An object is placed in front of convex mirror 20 cm radius of curvature.Its image is forced 8 cm behind the mirror.Find the distance of the object from the miror.

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should the screen be placed, so that a sharp focussed image can be obtained? Find the size and the nature of the image

A plane mirror 1 m high hangs on a wall.A man stnds at a distance 2 m away from the mirro.What is the height of the portion of the oposite wall in the room that can be seen by the man in the mirro,without changing the position of his head?The wall is 4m from the mirror.

A parabola mirror is kept along y^2=4x and two light rays parallel to its axis are reflected along one straight line. If one of the incident light rays is at 3 units distance from the axis, then find the distance of the other incident ray from the axis.

A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?

An object is placed 21 cm in front of a concave mirror of radius of curvature 10 cm.A glass slab of thickness 3 cm and refractive index 1.5 is then placed close to the irror in the space between the object and mirror as shown in Fig.2.62.Find the position of the final image formed.You may take the distacne of the near surface of the slab from the mirror to be 1 cm. .

One method of prodocing two in - phase point sources of light for interference is to form two images of a point source by means of the two halves of a lens,which has been split along a diameter[Fig.6.17]. A screen placed perpendicular tot he principal axis and 80 cm from the mage sources.What is the width of central maxima formed on the screen,if the wavelength of the light used is 5.4 xx 10^(-5) cm ?

An object of size 5 cm is placed at distance 25 cm in front of a concave mirror of focal length 20 cm. Find the size and nature of image formed ? Also find distance of image from the mirror.

MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. An air bubble inside the water behaves as:

    Text Solution

    |

  2. A lens behaves as a converging lens in air and diverging lens in wate...

    Text Solution

    |

  3. A point source of light B,placed in front of the centre of a mirror of...

    Text Solution

    |

  4. Two lenses have powers + 1 D and - 2 D respectively ,The power of comb...

    Text Solution

    |

  5. Two lenses having powers + 6 D and - 4D are placed in contact.The powe...

    Text Solution

    |

  6. An optical (eye specialist)prescibes spetacles is a pateint with a com...

    Text Solution

    |

  7. The focal length of a convex lens is 30 cm and the size of image is qu...

    Text Solution

    |

  8. A screen is placed 80 cm from an object. The image of the object on th...

    Text Solution

    |

  9. Which of the following pairs can produce erect,diminshed and virutual ...

    Text Solution

    |

  10. In order to obtain a real image of magnification 2 using a convergin l...

    Text Solution

    |

  11. Which of the following is true for rays coming from infinity?

    Text Solution

    |

  12. At what angle ,a ray of light will incident on one face of an equilate...

    Text Solution

    |

  13. The blue colour of the sky is due to the phenomenon of

    Text Solution

    |

  14. The sky appears blue, because.

    Text Solution

    |

  15. A red piece of paper when illuminated by green light appears:

    Text Solution

    |

  16. White light is passed through a dilute solution of potasssium permagna...

    Text Solution

    |

  17. C.V. Raman received Nobel Prize for the discovery of the following phe...

    Text Solution

    |

  18. C.V. Raman received Nobel Prize for the discovery of the following phe...

    Text Solution

    |

  19. The formation of rainbow in due to the phenomenon of

    Text Solution

    |

  20. If red light and violet light rays are of focal length fr adn fv then ...

    Text Solution

    |