MCAS Physics Exam Practice

Category - Introductory Physics

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Which of the following statements best describes an electromagnetic wave with a long wavelength?

It has a low frequency and can travel in a vacuum.
It has a high frequency and can travel in a vacuum.
It has a low frequency and can only travel in a medium.
It has a high frequency and can only travel in a medium.

Explanation

Answer: A - It has a low frequency and can travel in a vacuum.

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