Question

A sound wave is different than a light wave in that a sound wave is

• A. produced by an oscillating object and a light wave is not.
• B. not capable of travelling through a vacuum
• C. not capable of diffracting and a light wave is.
• D. capable of existing with a variety of frequencies.

Answer 1

The correct option is B not capable of travelling through a vacuum

Sound is a mechanical wave and cannot travel through a vacuum. Light is an electromagnetic wave and can travel through the vacuum of outer space.