Two short magnets of equal dipole moments M are fastened perpendicularly at their centres Find the effective magnetic moment.

Explanation

To find the effective magnetic moment of two short magnets with equal dipole moments \( M \) that are fastened perpendicularly at their centers, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Configuration**:
- We have two short magnets, each with a magnetic dipole moment \( M \).
- These magnets are oriented perpendicularly to each other, meaning the angle between their magnetic moments is \( 90^\circ \).

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