Question

There are multiple tuning forks present in the room, and Annie strikes one with a natural frequency of 400 Hz. Which of these other tuning forks will begin to vibrate through resonance and make the sound louder?

a 200 Hz tuning fork
a 400 Hz tuning fork
a 800 Hz tuning fork
a 1600 Hz tuning fork

Answer 1

B. a 400Hz tuning fork

Answer 2

Answer:  The correct answer is 400 Hz tuning fork.

Explanation:

Resonance occurs when the natural frequency of the object matches with frequency of the others.

In the given problem, there are multiple tuning forks present in the room, and Annie strikes one with a natural frequency of 400 Hz.  

Therefore, the tuning fork having frequency of 400 Hz will begin to vibrate through resonance and the sound louder.