Physics - Fluid Question with Solution | TestHub

Equilibrium of $A$ $$\begin{array}{rl}V{d}_{F}g& =T+W_A\\ & =T+V{d}_{A}g\end{array}$$ Equilibrium of $B$, $$T+V{d}_{F}g=V{d}_{B}g$$ Adding Eqs. (i) and (ii), we get $2d_f=d_A+d_B$ $\therefore$ Option (d) is correct. From Eq. (i), we can see that $$d_F>d_A\text{ [as }T>0\text{ ] }$$ $\therefore$ Option (a) is correct. From Eq. (ii) we can see that, $$d_B>d_F$$ $\therefore$ Option (a) is correct. $\therefore$ Correct options are (a), (b) and (d). Analysis of Question Question is moderately difficult but conceptwise it is good.