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SSC Selection Post 2024 PYQ — Question 43

SSC Selection Post - Higher Secondary Level - 25 June 2024 - Shift 4 • General Awareness • Q43

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A _________ is one billionth of a metre.

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Correct answer: D

Explanation

The correct answer is Option 4 i.e. nanometre.

  • A nanometre is one billionth of a meter.

  • A nanometer is a unit of measurement length in the metric system that is one billionth of the standard unit of measurement, "meter."

  • It is denoted by 'nm.'

  • It can be represented as

    • 1 nanometer = 1×10-9m.

  • The nanometer is commonly used in fields like nanotechnology, physics, biology, and semiconductor science, where extremely small measurements are required—often at the atomic or molecular scale.