1 fermi is equal to

Options

A. `10^7` micron
B. `10^(-5)` angstrom unit
C. `10^(-3)` nanometre
D. none of the above

Answer

To find out how many angstroms are in one Fermi, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Fermi**:
- One Fermi (1 F) is defined as \( 10^{-15} \) meters.

2. **Understand the Definition of Angstrom**:
- One Angstrom (1 Å) is defined as \( 10^{-10} \) meters.

3. **Set Up the Conversion**:
- To convert Fermi to Angstroms, we need to find how many Angstroms fit into one Fermi. This can be done by dividing the value of one Fermi in meters by the value of one Angstrom in meters.

4. **Perform the Calculation**:
\[ 1 \text{ Fermi} = \frac{10^{-15} \text{ meters}}{10^{-10} \text{ meters}} = 10^{-15 + 10} = 10^{-5} \text{ Angstroms} \]

5. **Conclusion**:
- Therefore, one Fermi is equal to \( 10^{-5} \) Angstroms.

### Final Answer:
One Fermi is equal to \( 10^{-5} \) Angstroms.