Question

A block of ice floats on a liquid of density 1.2 in a beaker then level of liquid when ice completely melts

• A. Remains same
• B. Rises
• C. Lowers
• D. (a), (b) or (c)

Answer 1

The correct option is B Rises

The volume of liquid displaced by floating ice $V_D=\frac{M}{{\sigma }_L}$
Volume of water formed by melting ice, $V_F=\frac{M}{{\sigma }_W}$
If ${\sigma }_1>{\sigma }_W,$ then, $\frac{M}{{\sigma }_L}<\frac{M}{{\sigma }_W}$ i.e. $V_D<V_F$
i.e. volume of liquid displaced by floating ice will be lesser than water formed and so the level if liquid will rise.