A sonometer wire is in unison with a tuning fork of frequency 256 Hz, when the length of the wire between the bridges is 75 cm and only one loop is formed. By keeping the length and tension constant, the wire is made to vibrate with 2 loops. The wire can still be in resonance with a tuning fork, provided the frequency of the tuning fork is__________
A. 100 Hz
B. 512 Hz
C. 384 Hz
D. 128 Hz
Answer:B
A sonometer wire is in unison with a tuning fork of frequency 256 Hz, when the length of the wire between the bridges is 75 cm and only one loop is formed. By keeping the length and tension constant, the wire is made to vibrate with 2 loops. The wire can still be in resonance with a tuning fork, provided the frequency of the tuning fork is__________
A. 100 Hz B. 512 Hz C. 384 Hz D. 128 Hz