Sound Wave

Step 1: Formula for wavelength.
The wavelength

%5Clambda

of a sound wave is given by the formula:

%5Clambda%20%3D%20%5Cfrac%7Bv%7D%7Bf%7D

where

v

is the velocity of sound and

f

is the frequency.
Step 2: Calculate wavelengths.
For the first tuning fork with a frequency of 320 Hz:

%5Clambda_1%20%3D%20%5Cfrac%7Bv%7D%7Bf_1%7D%20%3D%20%5Cfrac%7B326.4%7D%7B320%7D%20%3D%201.02%20%5C%2C%20%5Ctext%7Bm%7D

For the second tuning fork with a frequency of 340 Hz:

%5Clambda_2%20%3D%20%5Cfrac%7Bv%7D%7Bf_2%7D%20%3D%20%5Cfrac%7B326.4%7D%7B340%7D%20%3D%200.96%20%5C%2C%20%5Ctext%7Bm%7D

Step 3: Difference in wavelengths.
The difference in wavelengths is:

%5CDelta%20%5Clambda%20%3D%20%5Clambda_1%20%3Cbr%3E%20-%20%5Clambda_2%20%3D%201.02%20%3Cbr%3E%20-%200.96%20%3D%200.06%20%5C%2C%20%5Ctext%7Bm%7D

Chapter Questions
1 MCQs