Question

A drum Can begin to vibrate at its natural frequency without being struck through:

A. Refection

B.diffraction

C.refraction

D. Resonance

Answer IS D!!

Answer 1

Answer:

$\boxed{\text{D. Resonance}}$

Explanation:

If an external vibration matches the drum's natural frequency, it will induce the can to vibrate. This is an example of resonance.

It is analogous to pumping your legs in synchronization with a swing's natural frequency.