When an air column in a pipe closed at one end vibrates such that two nodes are formed in it, the frequency of its vibrations is ____.
Q.1 (x) When an air column in a pipe closed at one end vibrates such that two nodes are formed in it, the frequency of its vibrations is ____.
A. two times the fundamental frequency
B. three times the fundamental frequency
C. four times the fundamental frequency
D. five times the fundamental frequency