Question

While sitting in a boat, a fisherman observes that two complete waves pass by his position every 4 seconds. What is the period of these waves?

a) 0.5 s
b) 25
c) 45
d) 85

Answer 1

The period of these waves passing by his position every 4 seconds is 2 seconds. Thus the correct option is option (b).

Step-by-step explanation:

The period (T) of a wave is the time it takes for one complete cycle to pass a given point. In this scenario, the fisherman observes that two complete waves pass by his position every 4 seconds. Therefore, the period can be calculated by dividing the total time by the number of waves. Mathematically, this is expressed as:

T = Total Time/Number of Waves

Substituting the given values:

T = 4 s / 2 = 2 s

So, the period of each wave is 2 seconds.

In simple terms, this means that it takes 2 seconds for one complete wave to pass by the fisherman. The options provided are in seconds, and the correct answer is 2. Thus the correct option is option (b).

Question: While sitting in a boat, a fisherman observes that two complete waves pass by his position every 4 seconds. What is the period of these waves?

a) 0.5 s

b) 2 s

c) 4 s

d) 8 s