Question
Question: In a resonance-column experiment to measure the velocity of sound, the first resonance is obtained a...
In a resonance-column experiment to measure the velocity of sound, the first resonance is obtained at a length l1 and the sound resonance at a length l2, (end correction is taken into consideration), then –
A
l2> 3l1
B
l2 = 3l1
C
l2< 3l1
D
May be any of the above depending on the frequency of the tuning fork used
Answer
l2> 3l1
Explanation
Solution
l1 + e = 4λ
l2 + e = 43λ
l2 + e = 3(l1 + e)
l2 = 3l1 + 2e