1.

A stone is hung in air from a wire which is stretched over a sonometer. The bridges of the sonometer are \[L\] cm apart when the wire is in unison with a tuning fork of frequency\[N\]. When the stone is completely immersed in water, the length between the bridges is \[l\] cm for re-establishing unison, the specific gravity of the material of the stone is

A. \[\frac{{{L}^{2}}}{{{L}^{2}}+{{l}^{2}}}\]
B. \[\frac{{{L}^{2}}-{{l}^{2}}}{{{L}^{2}}}\]
C. \[\frac{{{L}^{2}}}{{{L}^{2}}-{{t}^{2}}}\] 
D. \[\frac{{{L}^{2}}-{{l}^{2}}}{{{L}^{2}}}\]
Answer» D. \[\frac{{{L}^{2}}-{{l}^{2}}}{{{L}^{2}}}\]


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