Home
Class 8
PHYSICS
In an unmagnetised iron bar, the molecul...

In an unmagnetised iron bar, the molecules form _______.

A

circular chains

B

long straight chains

C

closed chains

D

opposite, parallel chains

Text Solution

Verified by Experts

The correct Answer is:
C
According to Ewing's molecular theory, in unmagnetised iron bar, the molecular magnets form closed chains.
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM

    PEARSON IIT JEE FOUNDATION|Exercise Fill in the blanks|7 Videos

  • MAGNETISM

    PEARSON IIT JEE FOUNDATION|Exercise Matching|1 Videos

  • MAGNETISM

    PEARSON IIT JEE FOUNDATION|Exercise Short answer type question|20 Videos

  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise COMPETITION CORNER|59 Videos

  • MEASUREMENTS

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|10 Videos

Similar Questions

Explore conceptually related problems

In the presence of a magnet, an iron bar acts as a magnet due to ___________

Using a compass needle low would you distinguish between three bars similar in shape and appearance if one is brass, the second is an unmagnetised iron and the third is a permanent magnet ?

When an iron bar is placed nearer to the north pole of magnet, the south poles of the molecular magnets in the iron bar point towards______

When magnetised, length of an iron bar

To construct an electromagnet, Morgan uses an iron bar as the core and uses four electrical coils, made of four different materials to construct a solenoid. This is represented in the given figure. The iron bar will not be converted into an electromagnet if the solenoid is made of a

A bar magnet and a soft iron bar AB are placed close to each other as shown below Mark the polarity of induced magnetism in the soft iron bar with the help of lines of force. Explain by giving reasons for the polarity marked by you.

When an iron bar is moved over a bar magnet along its length the attractive force______

PEARSON IIT JEE FOUNDATION-MAGNETISM -Concept Application (level-1)
  1. The above diagrame is the pattern of magnetic lines of force obtained ...

    Text Solution

    |

  2. In the single touch method of magnetization , the north pole of a bar ...

    Text Solution

    |

  3. Assertion: Magnetic lines of force never intersect. Reason: The dire...

    Text Solution

    |

  4. The vertical plane in which magnetic needle lies at a place is called

    Text Solution

    |

  5. The effective length of the magnet shown above is .

    Text Solution

    |

  6. The equatorial meridian of a magnet

    Text Solution

    |

  7. A bar magnet is moved over a steel bar as shown in the figure. Choos...

    Text Solution

    |

  8. When a magnet is broken into two parts,

    Text Solution

    |

  9. In the electrical method of magnetization, the polarity of the end in ...

    Text Solution

    |

  10. An electric bell works on the principle of

    Text Solution

    |

  11. Define angle of declination.

    Text Solution

    |

  12. Which of the follwing molecular species does not exist?

    Text Solution

    |

  13. Which of the following substance is repelled by strong magnet ?

    Text Solution

    |

  14. In Which of the following devices is a permanent magnet not used ?

    Text Solution

    |

  15. A substance placed near a strong magnet is attracted by it, substance ...

    Text Solution

    |

  16. In an unmagnetised iron bar, the molecules form .

    Text Solution

    |

  17. Arrange the following statement in sequential order the process of plo...

    Text Solution

    |

  18. A bar magnet has a pole strength of 15 Am. If the distance from its ce...

    Text Solution

    |

  19. Arrange the following statement is sequential order to magnetize a ste...

    Text Solution

    |

  20. The magnetic moment of a bar magnet 'A' and its length are twice that ...

    Text Solution

    |