Question

An ice block floats in a liquid whose density is less than water. A part of block is outside the liquid. When whole of ice has melted, the liquid level will:

• A. rise
• B. go down
• C. remain same
• D. first rise then go down

Hint:

When a floating object melts, the volume displaced decreases, causing the liquid level to go down.

Answer 1

The Correct Option is B

Step 1: Archimedes' principle.
An ice block floats in the liquid because the weight of the ice is equal to the buoyant force exerted by the displaced liquid. Since the density of the ice is less than water, the volume displaced is more than the volume of the ice.

Step 2: After melting.
When the ice melts, the volume of liquid displaced decreases, leading to a decrease in the liquid level.
Thus, the correct answer is (2).