Electromagnetic Waves That Have a Wavelength of 300 M in Free

question 3

Multiple Choice

Electromagnetic waves that have a wavelength of 300 m in free space have a frequency of

• A) 1 × 10^-3 Hz.
• B) 5 × 10⁵ Hz.
• C) 1 × 10⁶ Hz.
• D) 9 × 10⁶ Hz.
• E) 1 × 10¹¹ Hz.

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Definitions:

Pitch

The frequency of vibrations of sound that enable one to classify sound on a scale from high to low.

Windpipe

The windpipe, also known as the trachea, is the air passage that leads from the larynx (voice box) to the bronchi, which are the major airways leading into the lungs.

Larynx

The organ located in the neck of mammals involved in breathing, producing sound, and protecting the trachea against food aspiration.

Trachea

A cartilaginous tube between the larynx and the main bronchus of the respiratory tree.