The example of lever is

Options

A. see - saw
B. beam of balance
C. both (1) and (2) are correct
D. both (1) and (2) are incorrect

Answer

### Step-by-Step Solution:

1. **Understanding the Definition of a Lever**:
A lever is a simple machine that allows us to lift or move heavy objects with less effort. It consists of a rigid bar that pivots around a fixed point known as the fulcrum.

2. **Components of a Lever**:
A lever has three main components:
- **Effort**: The force applied to lift the load.
- **Load**: The weight or resistance that needs to be moved.
- **Fulcrum**: The pivot point around which the lever rotates.

3. **Example of a Lever - Seesaw**:
A seesaw is a common example of a lever. When a person sits on one end of the seesaw, the other end can be lifted by applying force (effort) at a distance from the fulcrum.

4. **Example of a Lever - Beam Balance**:
A beam balance is another example of a lever. It consists of a horizontal beam balanced on a fulcrum, where weights can be placed on either side to measure mass. The effort applied is the weight of the items being measured, and the load is the counterweight.

5. **Conclusion**:
Both the seesaw and the beam balance are examples of levers, as they allow us to lift or measure weights with minimal effort.