Which of these is an effect of force?

Options

A. Decrease in mass
B. Change in shape
C. Increase in density
D. Change the volume

Answer

To determine which of the given options is an effect of force, let's analyze each option step by step.

### Step 1: Understanding Force
- Force is defined as a push or pull that can cause an object to move, stop, or change its motion. It can also cause changes in the object's shape or size.

### Step 2: Analyzing the Options
1. **Decrease in Mass**:
- Mass is a fundamental property of matter and is conserved. It cannot be decreased or increased by applying force. Therefore, this option is incorrect.

2. **Change in Shape**:
- Applying force to an object can change its shape. For example, if you push or pull a balloon, it will change its shape. This is a valid effect of force.

3. **Increase in Density**:
- Density is defined as mass per unit volume (Density = Mass/Volume). Applying force does not inherently increase density, as it does not change the mass and volume in a way that would increase density. Thus, this option is incorrect.

4. **Change in Volume**:
- While applying force can change the volume of certain materials (like compressing a gas), in many cases, the volume remains constant. For example, if you have a fixed amount of water, applying force does not change its volume. Hence, this option is also incorrect.

### Conclusion
Based on the analysis, the only correct effect of force among the options provided is **Change in Shape**.

### Final Answer
**Change in Shape** is the correct option.

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