What is the time period of a wave with a frequency of 20 Hz? (2022)

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Question: What is the time period of a wave with a frequency of 20 Hz? (2022)

Options:

Correct Answer: 0.1 s

Exam Year: 2022

Solution:

The time period T is the reciprocal of frequency, T = 1/f. Thus, T = 1/20 Hz = 0.05 s.

What is the time period of a wave with a frequency of 20 Hz? (2022)

What is the time period of a wave with a frequency of 20 Hz? (2022)

Step 1: Understand that frequency (f) is how many times a wave repeats in one second. In this case, the frequency is given as 20 Hz.
Step 2: Know that the time period (T) is the time it takes for one complete wave to pass a point. It is the opposite of frequency.
Step 3: Use the formula for time period, which is T = 1/f.
Step 4: Substitute the frequency value into the formula. Here, f = 20 Hz, so T = 1/20.
Step 5: Calculate the result. 1 divided by 20 equals 0.05.
Step 6: Conclude that the time period of the wave is 0.05 seconds.

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