When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known as

Answer: Resonance

Explanation:

Tympanic membrane is a thin membrane that separates the outer ear from the middle ear and transmits sound from the air to the malleus. It is also known as EAR DRUM.

Resonance is the condition when the tympanic membrane is set into vibration at the same intensity (frequency) as the incoming sound wave.

So, Resonance is the answer