AIEEE 2003 Paper With Solution

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AIEEE 2003

Sample Questions

The magnetic lines of force inside a bar magnet

  • are from north-pole to south-pole of the magnet
  • do not exist
  • depend upon the area of cross-section of the bar magnet
  • are from south-pole to north-pole of the magnet

Curie temperature is the temperature above which

(a) ferromagnetic material becomes paramagnetic (b) a paramagnetic material becomes diamagnetic (c) a ferromagnetic material becomes diamagnetic (d) a paramagnetic material becomes ferromagnetic

A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downward with an acceleration of 5m/s2, the reading of the spring balance will be

(a) 24 N                (b) 74 N                         (c) 15 N                         (d) 49 N

A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of

(a) each of these decreases                         (b) copper strip increases and that of germanium decreases

(c) copper strip decreases and that of germanium increases             (d) each of these increases

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