Question

Which one of the following scenarios accurately describes a condition in which resonance can occur? A. A column of air has a height equal to 1⁄8 of the wavelength of the sound waves produced by a tuning fork vibrating over the column of air in an open pipe that's partially immersed in water. B. A pipe's length is equal to 1⁄2 of the wavelength of the sound waves produced by a tuning fork vibrating over one end of the pipe that's open to the air at both ends. C. A person is holding a tuning fork on one end of a football field and another person is holding a separate tuning fork on the opposite end of the field. D. A vibrating tuning fork is struck and begins to vibrate as the object used to strike it is placed away from the tuning fork.

Answer 1

The correct option is B.
Resonance is said to occur when one object which is vibrating at the same natural frequency of a second object forces the second object into vibrational motion. When resonance is achieved a big loud voice is usually heard. Resonance generally requires three conditions to occur:
1. An object that has a natural frequency.
2. A force that is functioning at the same frequency as the natural frequency.
3. Prevention of energy loss.