If a string fixed at both ends, vibrates in its fourth harmonic, the wavelength is 15 cm. What is the length of the string_______
A. 20 cm
B. 30 cm
C. 25 cm
D. 40 cm
Answer:B
If a string fixed at both ends, vibrates in its fourth harmonic, the wavelength is 15 cm. What is the length of the string_______
A. 20 cm B. 30 cm C. 25 cm D. 40 cm