1 WHAT IS  MOST ESSENTIAL PROPERTY OF A WAVE MOTION AND WHY??

2GIVE FORMULA FOR TIME  OF ECHO

3 GIVE 2 EXAMPLES OF TRANSVERSE WAVE

1. The most essential property of a wave motion is frequency because it is the inherent property of wave and it do not change with pressure, medium and temperature.

2.

3. Examples of transverse waves:

 a). Light waves,

 b). Heat waves.