A string of length 1.5 m is fixed at both ends and vibrates at a frequency of 120 Hz in its fundamental mode. Calculate the speed of the wave in the string.
Q1. A string of length 1.5 m is fixed at both ends and vibrates at a frequency of 120 Hz in its fundamental mode. Calculate the speed of the wave in the string.
Answer: 360 m/s
Explanation: For fundamental mode, wavelength = 2 * length = 3 m. Speed = frequency * wavelength = 120 Hz * 3 m = 360 m/s. Option B is incorrect due to wrong wavelength consideration.