1. An iron nail is suspended vertically from a string. When a strong bar magnet is brought close to it, the iron nail is attracted to the magnet and the string assumes an inclined position. If a wooden plank is placed between the iron nail and the magnet, the string will _______.   remain in an inclined position   return to its vertical position   2. The distance between one of the magnetic poles and the centre of the bar magnet is called the   magnetic equator   effective length   length of magnet   Hint Half-n-half Clue   3. The distance between the magnetic north pole and magnetic south pole of a bar magnet is called the   equatorial axis   length of magnet   effective length   Half-n-half Clue   4. The imaginary vertical plane passing through the magnetic axis of a freely suspended bar magnet is called the   magnetic equator   magnetic meridian   equatorial meridian   Half-n-half Clue   5. Most of the magnetic power appears to be concentrated at certain points of a magnet. These points are called _______.   inductors   poles   keepers   Half-n-half Clue   6. Name the magnetic iron ore once used as a primitive compass.   Lodestone   Keeper   Soft Iron   Half-n-half Clue   7. _______ magnets are made of steel.   Temporary   Permanent   Electro   Half-n-half Clue