Question
Question: Two tuning forks A and B are in unison with strings of length 0.96 m and 0.97 m respectively produce...
Two tuning forks A and B are in unison with strings of length 0.96 m and 0.97 m respectively produces 2 beats per half second. The frequency of A and B are in (Hz) –
A
384, 388
B
384, 386
C
388, 384
D
388, 386
Answer
384, 386
Explanation
Solution
If Ist resonance occurs at 
= 20
next will be at 
= 3 × 20 = 60 cm