Home
Class 9
PHYSICS
The magnification for a mirror is -3. Ho...

The magnification for a mirror is -3. How are u and v related?

Text Solution

Verified by Experts

The correct Answer is:
v=3u
Promotional Banner

Topper's Solved these Questions

  • REFLECTION OF LIGHT

    ICSE|Exercise EXERCISE 7(B)|9 Videos
  • PROPAGATION OF SOUND WAVES

    ICSE|Exercise EXERCISE -8(B) (Multiple choice type)|3 Videos
  • SOUND

    ICSE|Exercise TOPIC 2 Infrasonic and Ultrasonic Waves ( 3 Marks Questions) |3 Videos

Similar Questions

Explore conceptually related problems

The magnification produced by a plane mirror is m = +1 . What does this mean ?

The image formed by a convex mirroris of size one third the size of object. How are u and v related?

The erect image formed by a concave mirror is of size double the size of object. How are u and v related?

A concave mirror gives a real image magnifies 4 times. When the object is moved 3 cm the magnification of the real image is 3 times. Find the focal length of mirror.

Assertion : If magnification of real object is -2. Then, it is definitely a concave mirror. Reason : Only concave mirror can make real images of real objects.

Where should an object be placed in front of a concave mirror of focal length 15 cm to have a magnification of 3 in case of (a) real image (b) virtual image ?

The object distance u, the image distance v and the magnification m in a lens follow certain linear relations.

Magnification produced by a convex mirror is 1/3 , then distance of the object from mirror is

An object kept on the principal axis and infront of a spherical mirror, is moved along the axis itself. Its lateral magnification m is measured, and plotted versus object distance |u| for a range of u, as shown in figure. The magnification of the object when it is placed at a distance 20cm in front of the mirror is

The lateral magnification of the lens with an object located at two different position u_(1) and u_(2) are m_(1) and m_(2) , respectively. Then the focal length of the lens is

ICSE-REFLECTION OF LIGHT-EXERCISE 7(C)
  1. State three characteristics of the image seen in part a.

    Text Solution

    |

  2. A mirror which is always used as a rear view mirror for vehicles is :

    Text Solution

    |

  3. Why does a driver use a convex mirror instead of a plane mirror as are...

    Text Solution

    |

  4. For an incident ray directed towards centreof curvature of a spherical...

    Text Solution

    |

  5. The image formed by a convex mirror is

    Text Solution

    |

  6. Name the kind of spherical mirror used to obtain : A real and enlarged...

    Text Solution

    |

  7. The radius of curvature of a convex mirror is 40 cm. Find its focal l...

    Text Solution

    |

  8. The focal length of a concave mirror is 10 cm. Find its radius of cur...

    Text Solution

    |

  9. An object of height 2 cm is placed at a distance 20cm in front of a co...

    Text Solution

    |

  10. An object is placed at 4 cm distance in front of a concave mirror of r...

    Text Solution

    |

  11. At what distance from a concave mirror of focal length 25 cm should an...

    Text Solution

    |

  12. An object 5 cm high is placed at a distance 60 cm in fornt of a concav...

    Text Solution

    |

  13. A point light source is kept in front of a convex mirror at a distance...

    Text Solution

    |

  14. When an object of height 1 cm its kept at a distance 4 cm from a conca...

    Text Solution

    |

  15. An object of length 4 cm is placed in front of a concave mirror at dis...

    Text Solution

    |

  16. A concave mirror forms a real image of an object placed in front of i...

    Text Solution

    |

  17. A concave mirror forms a virtual imageof size twice that of the object...

    Text Solution

    |

  18. The image formed by a convex mirroris of size one third the size of ob...

    Text Solution

    |

  19. The erect image formed by a concave mirror is of size double the size...

    Text Solution

    |

  20. The magnification for a mirror is -3. How are u and v related?

    Text Solution

    |