How large is 1 micron in inches?

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Multiple Choice

How large is 1 micron in inches?

Explanation:
Think in terms of how small a micron really is. A micron is 1e-6 meters. Since 1 inch equals 0.0254 meters, 1 micron converts to inches as 1e-6 / 0.0254, which is about 3.94 × 10^-5 inches. That’s roughly 0.000039 inches, or about 1/25,400 of an inch. The closest match among the options is about 1/25,000 of an inch. The other choices describe fractions of an inch that are far larger than 1 micron (for example, 1/100 of an inch is 0.01 inches, and half an inch is 0.5 inches).

Think in terms of how small a micron really is. A micron is 1e-6 meters. Since 1 inch equals 0.0254 meters, 1 micron converts to inches as 1e-6 / 0.0254, which is about 3.94 × 10^-5 inches. That’s roughly 0.000039 inches, or about 1/25,400 of an inch. The closest match among the options is about 1/25,000 of an inch. The other choices describe fractions of an inch that are far larger than 1 micron (for example, 1/100 of an inch is 0.01 inches, and half an inch is 0.5 inches).

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