Question

Ring magnets in the image are repelling each other. If top face of blue ring magnet is north pole then the poles of the bottom face of red magnet and top face of yellow magnet should be _____ and _____ respectively.

• A.
  north, north
• B.
  south, south
• C.
  north, south
• D. south, north

Answer 1

The correct option is C

north, south
1. Like poles of magnet repel each other. So, bottom face of red magnet and top face of blue magnet should have same pole. So, bottom face of red magnet is also north pole.
2. If top of blue magnet is north pole, then bottom of blue magnet will be south pole. According to property of magnet, top of yellow magnet is also south pole.