Which of the Following Statements About Electromagnetic Waves in Free

question 42

Multiple Choice

Which of the following statements about electromagnetic waves in free space are true? (There could be more than one correct choice. )

• A)The higher-frequency travel faster than the lower-frequency waves.
• B)The higher-frequency waves have shorter wavelengths than the lower-frequency waves.
• C)The wavelengths of the visible waves are some of the longest electromagnetic waves.
• D)The wavelengths of the visible waves are some of the shortest electromagnetic waves.
• E)The electric field vector is always at right angles to the magnetic field vector.

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Definitions:

Aneurysm

A localized enlargement or ballooning of a blood vessel due to weakness in the vessel wall.

Cardiovascular Disease

A class of diseases involving the heart and blood vessels, including heart disease, hypertension, and stroke.

Physiological Risk

The potential for harm to bodily functions or processes, often assessed in the context of exposure to harmful substances or stressful conditions.

Hypertension

A chronic medical condition in which the blood pressure in the arteries is elevated, increasing the risk of heart disease, stroke, and other health problems.