Question

In a ripple tank, 10 full ripples/s are produced. The distance between peaks of consecutive trough and crest is 15 cm. Calculate the frequency.

• A. $5Hz$
• B. $10Hz$
• C. $15Hz$
• D. $20Hz$

Answer 1

The correct option is B $10Hz$

Frequency is the number of complete vibrational cycles of a medium per a given amount of time. The frequency would have units of cycles per second, waves per second or vibrations per second. The unit for frequency is the Hertz (abbreviated Hz) where 1 Hz is equivalent to 1 cycle per second.
In the question it is mentioned that 10 full ripples per second are produced. Hence, the frequency is 10 Hz.