Question

Electromagnetic and mechanical waves both transfer energy. How is an electromagnetic wave different from a mechanical wave?

Question 4 options:

a.An electromagnetic wave has frequency, and a mechanical wave does not.

b.An electromagnetic wave is made of atoms, and a mechanical wave is not.


c.An electromagnetic wave can travel in a vacuum, and a mechanical wave cannot.


d.Electromagnetic waves have frequencies that never change, and mechanical wave frequencies change.

Answer 1

c. An electromagnetic wave can travel in a vacuum, and a mechanical wave cannot.

Answer 2

Answer: The correct answer is Option c.

Step-by-step explanation:

Electromagnetic waves are defined as the waves which have electrical and magnetic component associated with them. These waves does not require any medium to propagate and thus can travel in vacuum. These waves travel with the speed of light. For Example: Light waves

Mechanical waves are the waves which require a medium to propagate because they transport the energy associated with them from one location to the other location. It travel faster in solids because the particles lie close to each other. For Example: Sound waves

Hence, the correct answer is Option c.