resonance in an air column experiment
Answers
Explanation:
DESCIRBE THE SETUP OF RESONANCE COLUMN METHOD IN FINDING SPEED OF SOUND IN AIR - RESULT
concept
Following is the procedure to find speed of sound in air using Resonance tube.
1. First fill the tube nearly full of water and then strike one of the tuning forks with the rubber mallet supplied and hold it above the water column.
Precautions to be taken: do not touch the tube with the tuning fork - the rapidly moving fork can break the plastic.
2. By using the moveable water reservoir, lower the water surface slowly, listening for amplification of the tone. When a resonance is found, a pronounced reinforcement of the sound will be heard. Now move the water surface up and down multiple times to locate the point of maximum sound intensity and mark that point using a rubber band on the outside of the tube.
3. Lower the water further to find the next resonant length. One has to Continue in this manner as far as the length of the tube will permit. Obtain the lengths L/4, 3L/4, etc. in meters from your measurements. You will need to check to see if your column lengths follow the progression 1, 3, 5, 7, -- since you may have missed a resonance or counted one of the fainter spurious resonances which sometimes occur. Calculate the wavelength and velocity of sound.
4. Now repeat the procedure for the other tuning forks supplied in the manner described. The velocity in miles per hour may be found by multiplying the velocity in m/sec by the factor 2.24. Please record the room temperature for reference since the velocity of sound increases with increasing air temperature.