Question
Question: A tuning fork of frequency 480 Hz produces 10 beats per second when sounded with a vibrating sonomet...
A tuning fork of frequency 480 Hz produces 10 beats per second when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in tension produces lesser beats per second than before-
A
460 Hz
B
470 Hz
C
480 Hz
D
490 Hz
Answer
470 Hz
Explanation
Solution
v = 480 Hz
v¢ = v ± 10 = 470 or 490