Question

Which statement is true about electromagnetic and mechanical waves? (1 point)
Responses

Electromagnetic waves all have the same frequency but mechanical waves occur with different frequencies and wavelengths.
Electromagnetic waves all have the same frequency but mechanical waves occur with different frequencies and wavelengths.

Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.
Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.

Electromagnetic waves travel slower than mechanical waves.
Electromagnetic waves travel slower than mechanical waves.

Electromagnetic waves are transverse, but mechanical waves are longitudinal.
Electromagnetic waves are transverse, but mechanical waves are longitudinal.
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Answer 1

Electromagnetic waves can travel without a medium, but mechanical waves require a medium to travel.

Explanation: EM waves (light, radio, etc.) propagate through vacuum; mechanical waves (sound, water waves, vibrations in solids) need a material medium to carry the disturbance.