Step 1: Understanding the definition.
The given definition describes a form of communication that does not involve spoken or written words. This means communication happens through means other than verbal or written language.
Step 2: Identifying the correct term.
Communication without words is known as Non-verbal communication. It involves conveying messages through body language, facial expressions, gestures, eye contact, posture, touch, and other physical signals.
Step 3: Examples of non-verbal communication.
Facial expressions (smiling, frowning) Gestures (waving, pointing) Eye contact Posture and body movement Touch (handshake, pat on back) Personal space Tone of voice (paralanguage)
| 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 |