A uning fork produces 4 beats/sec, with a sonometer wire of length 40 cm. It is found that when the length is increased to 44 cm, by keeping other factors constant, again 4 beats/sec are produced. What is the frequency of the tuning fork?
A. 44 Hz
B. 84 Hz
C. 100 Hz
D. 176 Hz
Answer:B
A uning fork produces 4 beats/sec, with a sonometer wire of length 40 cm. It is found that when the length is increased to 44 cm, by keeping other factors constant, again 4 beats/sec are produced. What is the frequency of the tuning fork?
A. 44 Hz B. 84 Hz C. 100 Hz D. 176 Hz