A red marble is placed in a small beaker that contains some water. The small bea

Question

A red marble is placed in a small beaker that contains some water. The small beaker and its contents are placed in a larger beaker that has water in it. The smaller beaker floats as shown in the figure left. Now the marble is taken out of the small beaker and placed in the large beaker where it sinks to the bottom (figure right). What happens to the water level in the large beaker when this is done?

A) The water level in the large beaker will rise.

B) The water level in the large beaker will not change.

C) The water level in the large beaker will drop.

D) The water level in the large beaker will drop, rise or stay the same depending on the mass density of the marble.

Explanation / Answer

Answer (A)

The water level will rise.

Because : As per Archmidies principal volume displaced by a body submerged inside the fluid is equal to net buoyant force on submerged body. In our case the marble as occupied some volume of large beaker. The displaced volume of marble will raise the volume of large beaker.

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