Question

Several magnetic and non-magnetic bars of equal dimensions are glued together as shown on the left. If blue denotes magnetic north, red denotes magnetic south and grey denotes non-magnetic material, what will be the configuration of the faces on the other end?

• A. Fig A
• B. Fig B
• C. Fig C
• D. Fig D

Hint:

Always remember that when you walk to the opposite side of an object to view its back, your left and right are swapped. This horizontal reflection is key to matching the wings of the assembly correctly.

Answer 1

The Correct Option is C

Step 1: Track polarity.
Follow N (blue) and S (red) through each glued bar; grey non-magnetic bars pass the field via adjacency.
Step 2: Read the far end.
The resulting pole pattern matches one option.
\[ \boxed{\text{Option 3 (Fig C)}} \]