Every liquid exerts an upward force on the objects immersed in it . Upward force is called

Options

A. gravitational force
B. buoyant force
C. mechanical force
D. magnetic force

Answer

To solve the question, we need to identify the upward force exerted by a liquid on an object immersed in it. Let's go through the steps to arrive at the correct answer.

### Step-by-Step Solution:

1. **Understanding the Question**: The question states that every liquid exerts an upward force on objects that are immersed in it. We need to determine what this upward force is called.

2. **Identifying the Options**: The options provided in the question are likely to include terms like gravitational force, buoyant force, mechanical force, and magnetic force.

3. **Analyzing Each Option**:
- **Gravitational Force**: This force acts downwards due to the mass of the object and the gravitational pull of the Earth. It is not the upward force we are looking for. Thus, this option is incorrect.
- **Buoyant Force**: This is the upward force exerted by the liquid on the immersed object. According to Archimedes' principle, this force is equal to the weight of the liquid displaced by the object. Hence, this option is correct.
- **Mechanical Force**: This is a broad term that includes any contact force, including the buoyant force. However, it does not specifically refer to the upward force in liquids. Therefore, this option is not the best answer.
- **Magnetic Force**: This is a non-contact force that acts between magnets or moving charges. Since the question pertains to a liquid and an object in contact, this option is also incorrect.

4. **Conclusion**: After analyzing all the options, the upward force exerted by a liquid on an immersed object is specifically called the **Buoyant Force**.

### Final Answer:
The upward force exerted by a liquid on an object immersed in it is called **Buoyant Force**.