Find the number of waves made by a Bohr's electron in one complete revolution in its 5th orbit.

Explanation

To find the number of waves made by a Bohr's electron in one complete revolution in its 5th orbit, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Bohr Model**:
In the Bohr model, an electron moves in circular orbits around the nucleus. The radius of the nth orbit is given by \( r_n = n^2 \cdot r_0 \), where \( r_0 \) is the radius of the first orbit.

2. **Circumference of the Orbit**:
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