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# Which of the following is the smallest unit of measurement?

a) Millimeter b) Angstrom c) Fermi d) Meter

**Solution:**

Millimeter, angstrom, fermi, and meter are different measuring units used to measure the length, height, distance, etc.

We know that,

Meter is the SI unit of length.

1 millimeter = 1/10^{3} meter

1 angstrom = 1/10^{10} meter

1 fermi = 1/10^{15} meter

From the above relationships, it is clear that fermi has the least value.

Hence, in the given options the smallest unit of measurement is Fermi.

## Which of the following is the smallest unit of measurement? a) Millimeter b) Angstrom c) Fermi d) Meter

**Summary:**

Option C - Fermi is the smallest unit of measurement.

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