Question

1 fermi is equal to

• A. $10^{-12} m$
• B. $10^{-9} m$
• C. $10^{-6} A^0$
• D. $10^{-9} m$ micron

Hint:

Fermi also known as Femtometer, is a unit of length in the SI unit. 

Answer 1

The Correct Option is D

 1 fermi is equal to \(10^{-9} m\) micron.

The fermi is the unit of length used to measure small distances in nuclear physics. The unit fermi is also known as a femtometer. 1 fermi = 10^-15m.

The other conversions for 1 fermi are:

• Micron/Micrometer is a unit of length. To convert fermi to micron,
  1 micron = 10⁻⁶ meter 
  1 Fermi = 10⁻¹⁵meter = 1 Fermi = 10⁻¹⁵/10⁻⁶
                = 10⁻¹⁵⁺⁶
                = 10⁻⁹micron
• 1 A⁰= 10⁻¹⁰ meter
  1 Fermi = 10⁻¹⁵ meter 
  1 Fermi = 10⁻¹⁵/10⁻¹⁰= 10⁻¹⁵⁺¹⁰A⁰
                          = 10⁻⁵A⁰

Also Read: Unit Conversions

Answer 2

To solve this, let's convert 1 fermi to each of the units given in the options:

Conversion to microns:
1 micron = \(10^{-6}\) meters
1 fermi = \(10^{-15}\) meters
To convert fermis to microns:
\(\text{1 fermi} = 10^{-15} \text{ meters} \times \left(\frac{1 \text{ micron}}{10^{-6} \text{ meters}}\right) = 10^{-15 + 6} \text{ microns} = 10^{-9} \text{ microns}\)

So, 1 fermi is equal to \(10^{-9}\) microns.

So, the correct option is (D): \(10^{-9}\) microns.