Question

A piece of ice is floating in a beaker containing water. When ice melts, the temperature falls from ${20}^{\circ }C$ to $4^{\circ }C$ and the level of water:

• A. Remains unchanged
• B. Falls
• C. Rises
• D. Change erratically

Answer 1

The correct option is B Falls

The density of water is maximum at

$4^{\circ }C.$ Let 'x' amount of ice has

been melted. Then the volume of

water at ${20}^{\circ }C$ displaced

to float that 'x' amount of ice

will be higher than the volume

of water that has been gained

after melting of ice as both volumes

have same masses 'x' but the density

is higher at $4^{\circ }C.$ consequently, the

water level falls

Option $-B$ is correct