Home
Class 7
PHYSICS
A concave mirror is formed from a sphere...

A concave mirror is formed from a sphere of radius 20 cm. The image of an object at an infinite distance is formed at a distance of _____ cm from the mirror.

Text Solution

Verified by Experts

The correct Answer is:
10 cm
When the object is placed at infinite distance, the image is formed at the principal focus. Radius of curvature, (R) =20 cm.
Focal length `-(R)/(2)=(20)/(2)=-10cm`.
Promotional Banner

Topper's Solved these Questions

  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise Level 2|23 Videos

  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|5 Videos

  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise LONG ANSWER TYPE QUESTIONS|7 Videos

  • KINEMATICS

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TEST (TEST 2 (SELECT THE CORRECT ALTERNATIVE)|15 Videos

  • MACHINES AND TOOLS

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION (LEVEL 2)|12 Videos

Similar Questions

Explore conceptually related problems

The image of an object at infinite distance is formed at _________ of a concave mirror.

The image of an object is formed at infinite distance from a concave mirror. The position of the object is _______.

Where is the image formed when an object is at large distance from a concave mirror?

An concave mirror of focal length 30 cm forms an image of double of the height of object. If the image is real then the distance of the object from image is

With a concave mirror, an object is placed at a distance 9cm from the principal focus, on the principal axis. The image is formed at a distance 16cm from the principal focus. The focal length of the mirror is

PEARSON IIT JEE FOUNDATION-LIGHT-Level 1
  1. helps to convert light energy into chcmical energy.

    Text Solution

    |

  2. When the Moon is not completely visible from the Earth, we call it ec...

    Text Solution

    |

  3. A concave mirror is formed from a sphere of radius 20 cm. The image of...

    Text Solution

    |

  4. mirror is used as shaving mirror.

    Text Solution

    |

  5. If the angle of incidence on a plane mirror is 30^(@), then angle betw...

    Text Solution

    |

  6. When an object is held between pole and focus of a concave mirror, the...

    Text Solution

    |

  7. The path of light entering into the eye .

    Text Solution

    |

  8. The image of an object placed in front of a concave mirror found to co...

    Text Solution

    |

  9. The image of an object is formed at infinite distance from a concave m...

    Text Solution

    |

  10. One wants to see a magnified image of an object in a mirror. What type...

    Text Solution

    |

  11. Geometric centere of a mirror is called mirror.

    Text Solution

    |

  12. Explain why, a ray of light passing through the centre of curvature of...

    Text Solution

    |

  13. The phenomenon of light which is responsible for vision is .

    Text Solution

    |

  14. Which of the following is (are) true in the case of a plane mirror?

    Text Solution

    |

  15. When an object is placed between two parallel mirrors, then number of ...

    Text Solution

    |

  16. The intensity of light at a distance 'r' from the axis of a long cylin...

    Text Solution

    |

  17. The image formed by a plane mirror is .

    Text Solution

    |

  18. Read the following statements and choose the correct option. (A) Mo...

    Text Solution

    |

  19. Which of the following is (are) man made source(s) of light?

    Text Solution

    |

  20. Read the following statements and choose the correct option. (A) Sha...

    Text Solution

    |