To increase computer performance, consider the following actions:
1. Upgrade Hardware: Adding more RAM or installing a faster processor can significantly improve a computer’s speed and responsiveness.
2. Optimize Software: Regularly updating the operating system, defragmenting the hard drive, and cleaning up unnecessary files can free up system resources and enhance overall performance.
3. Close Unnecessary Programs: Running too many applications simultaneously can slow down the computer. Closing unused programs frees up memory and processing power.
| Case No. | Lens | Focal Length | Object Distance |
|---|---|---|---|
| 1 | \(A\) | 50 cm | 25 cm |
| 2 | B | 20 cm | 60 cm |
| 3 | C | 15 cm | 30 cm |