A column of air of length 50 cm resonates with a stretched string of length 40 cm. The length of the same air column which will resonates with 60 cm of the same string at a the same tension is

Question

Dr. Abubacker · Accepted Answer

(b) As $\frac{l_{2}}{2l} = \frac{l_{2}^{'}}{l_{1}^{'}}$
$	herefore\frac{60}{40} = \frac{l_{2}^{'}}{50^{'}}$ ,
$l_{2}^{'} = \frac{50 	imes 60}{40} = 75\ cm$

Q. A column of air of length 50 cm resonates with a stretched string of length 40 cm. The length of the same air column which will resonates with 60 cm of the same string at a the same tension is

Explanation

Reviewed by Dr. Abubacker

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