Question

6. One ----------------- equals the distance between two successive wave crests or troughs.

7. --------------------- (Hertz) equals the number of waves that passes a given point per second.

Answer 1

Comment in case of any doubt.

6 A typical ware is like : Crest wavelength frest Havelength is defined as distance between two nearest points in same phase. wavelength Two crests are in same phase and two troughs are also in same phase. Thus, answer is wavelength. Trough Trough 7 - The given statement is of a waves. So, answer definition of frequency is frequency