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An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is 50 cm. The next larger length of the column resonating with the same tuning fork is :
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- 66.7 cm
- 100 cm
- 150 cm
- 200 cm
Correct Option: C
For a closed organ pipe first minimum resonating length
L1 = λ/4 = 50 cm
∴ Next or second resonating length, L2
= 3λ/4 = 150 cm.
