Which of the following is the smallest unit of measurement?
a) Millimeter b) Angstrom c) Fermi d) Meter
Millimeter, angstrom, fermi, and meter are different measuring units used to measure the length, height, distance, etc.
Answer: Option C - Fermi is the smallest unit of measurement.
Let's express each of these units in terms of meter to compare them.
We know that,
Meter is the SI unit of length.
1 millimeter = 1/103 meter
1 angstrom = 1/1010 meter
1 fermi = 1/1015 meter
From the above relationships, it is clear that fermi has the least value.