Question Title

* ➡ A Nemeth Code version of this question is available. ⬅

The wavelength of blue light is between 450 and 495 nanometers. A nanometer represents one billionth of a meter (10⁻⁹ m).

Which option below shows "'10 superscript negative-9' m" correctly in UEB?

We hope you do NOT have a blue Christmas like Elvis sang about! 😉💙😄


10⁻⁹ m

Question Title

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T