A micron is equal to A. 0.1 mm B. 0.01 mm C. 0.001 mm D. 0.0001 mm

The correct answer is:

A micron is equal to 0.001 mm.

A micron is a unit of length equal to one millionth of a meter (10−6 m), or one thousandth of a millimeter (10−3 mm). It is also known as a micrometer or a micrometre. The symbol for a micron is μm.

Microns are often used to measure small objects, such as bacteria, viruses, and dust particles. They are also used to measure the thickness of thin films and the diameter of fibers.

Here is a brief explanation of each option:

• Option A: 0.1 mm is equal to one tenth of a millimeter. This is not equal to a micron, which is one millionth of a meter.
• Option B: 0.01 mm is equal to one hundredth of a millimeter. This is also not equal to a micron, which is one millionth of a meter.
• Option C: 0.001 mm is equal to one thousandth of a millimeter. This is equal to one micron.
• Option D: 0.0001 mm is equal to one ten-thousandth of a millimeter. This is not equal to a micron, which is one millionth of a meter.