Yes, the telephone is a very effective and widely used form of oral communication.
The reasons are:
1. Immediate Communication: Telephone communication allows instant interaction, enabling Rahul to provide quick instructions to his employees.
2. Clarity and Feedback: Verbal instructions reduce misunderstandings as questions can be clarified immediately.
3. Efficiency: It saves time compared to written communication methods like emails or memos.
For instance, Rahul can quickly discuss project updates and resolve issues with his team over the phone.
| 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 |