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The period of oscillations of mercury of...

The period of oscillations of mercury of mass m ,density `rho` poured into a uniform bent tube,as shown in figure,whose right arm forms an angle `theta=30^(@)` with the vertical and whose left arm is vertical is T seconds.The cross - sectional area of the tube is S. The viscosity of mercury is to be neglected. If T is `2 pi sqrt((m)/(rho gS(x)))` ,then value of x is ( assume g= acceleration due to gravity & all parameters in S.I.units)

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