Question

What makes a body to float in a liquid?

• A. When density of object is less than that of the liquid
• B. When density of object is greater than that of liquid
• C. When the object displaces a volume of liquid less than its own volume
• D. When gravity is greater than buoyant force

Answer 1

The correct option is A When density of object is less than that of the liquid

When an object is immersed in a liquid, it exerts a weight in the downward direction and the liquid exerts a force called upthrust in the upward direction on the object. If the object sinks in the liquid, then the weight of the body is greater than the upthrust acting on the object by the liquid. If the object floats in the liquid, then the weight of the body is less than the upthrust acting on the object by the liquid.