Question

An object under a microscope has a diameter of 125 micrometers. What is its diameter in millimeters? A) 1.25 x 10⁻⁶ mm B) 1.25 x 10⁻³ mm C) 1.25 x 10 ⁻¹mm D) 1.25 x 10⁻⁴ mm

Answer 1

The diameter of an object that measures 125 micrometers is 0.125 millimeters. This conclusion is reached by understanding that there are 1,000 micrometers in a millimeter and dividing 125 by 1,000.

Step-by-step explanation:

An object under a microscope has a diameter of 125 micrometers, and we want to know what this measures in millimeters. One must be clear that a micrometer (µm) is 10-6 m and millimeters (mm) are 10-3 m, so there are 1,000 micrometers in a millimeter. To convert, we follow these steps:

1. Understand the relation: 1 mm = 1000 µm.
2. Divide 125 by 1000: 125/1000 = 0.125.

This means that an object with a diameter of 125 micrometers has a diameter of 0.125 millimeters. So, the answer is none of the options given, the correct answer should be 0.125 mm.

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