The four factors to consider when choosing the right method of communication are:
1. Audience: Consider who the message is intended for (peers, superiors, customers) and their preferred communication style.
2. Message Complexity: If the message is complex or requires detailed explanation, face-to-face or written communication may be preferable.
3. Urgency: For urgent matters, instant messaging or a phone call may be more effective.
4. Formality: Formal messages may require professional channels like email, while informal communications can be done through quick chats.
| 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 |