An interesting medium allows wavelengths in the range of 1 meter to 3 meters and speed of these waves can be only 15 m/s. Determine the possible range of frequencies in this medium.

Question

Quizplus · Accepted Answer

We will use the equation
frequency = speed / wavelength 
twice, for each wavelength and determine the range of frequencies.
Step 1: When wavelength = 1 m:
frequency = 15 m/s / 1 m
frequency = 15 Hz.
Step 2: When wavelength = 3 m:
frequency = 15 m/s / 3 m
frequency = 5 Hz.
Then possible range of frequencies in this medium is 5 Hz to 15 Hz.

An Interesting Medium Allows Wavelengths in the Range of 1