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Magnetism and Matter Test - 16
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Magnetism and Matter Test - 16

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  • Question 1/10
    4 / -1
    Magnetic field intensity due to a dipole varies as dn, where n is equal to
  • Question 2/10
    4 / -1
    A closely wound solenoid of 800 turns has area of cross section 2.5 cm2. Magnetic moment associated with it, when it carries a current of 3A is
    Solutions

  • Question 3/10
    4 / -1
    The magnet of pole strength m and magnetic moment M is cut into two pieces along its axis. Its pole strength and magnetic moment now become
  • Question 4/10
    4 / -1
    Two magnets of equal magnetic moments M each are placed as shown in Fig. The resultant magnetic moment is

    Solutions

  • Question 5/10
    4 / -1
    What is the resultant magnetic moment of two magnets, each of magnetic moment M in the following figures?

    Solutions

  • Question 6/10
    4 / -1
    The distance between the poles of a horse shoe magnet is 4 cm. the pole strength of each pole is 40 units. The magnetic potential midway between the poles is
    Solutions

  • Question 7/10
    4 / -1
    The magnet A (pole strength m) of mass M kg floats on the top of another identical magnet B as shown in Fig. The vertical distance between the two magnets is d metre. The balance condition is achieved due to:

  • Question 8/10
    4 / -1
    A dip circle is so set that its needle moves freely in the magnetic meridian. In this position, the angle of dip is 40o. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30o with the magnetic meridian. In this position, the needle will dip by an angle
    Solutions

  • Question 9/10
    4 / -1
    Aurora Borealis is a luminous electrical discharge in the upper layers of the atmosphere, which is visible more frequently in
  • Question 10/10
    4 / -1
    Earth’s magnetic field always has a horizontal component except at
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