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The modern standard for the base unit of Length is primarily defined based on which universal principle?

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Question

The modern standard for the base unit of Length is primarily defined based on which universal principle?

Options

  • Speed of light

  • Atomic clock

  • Earth's circumference

  • Metal mass

MCQ
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Solution

Speed of light

Explanation:

The modern Length Standard is defined using the speed of light, having evolved from a physical bar.

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