Question

In the experiment to determine the speed of sound using a resonance column,

• A. prongs of the tuning fork are kept in a vertical plane.
• B. prongs of the tuning fork are kept in a horizontal plane.
• C. in one of the two resonances observed, the length of the resonating air column is close to the wavelength of sound in air.
• D. in one of the two resonances observed, the length of the resonating air column is close to half of the wavelength of sound in air.

Answer 1

Answer: (A)

Prongs are kept in vertical planes to set up longitudinal standing waves with maximum intensity.