The unit used to measure frequency is?

The unit used to measure frequency is?

• A. Watt
• B. Joule
• C. Pascal
• D. Hertz

Answer: (D)

Frequency is how many times something repeats in a given amount of time. For waves and other repeating motions, it’s measured in cycles per second, and the standard unit for that is the hertz. One hertz means one cycle per second. So if a string on a guitar vibrates 440 times each second, its frequency is 440 Hz. Other terms you might see—watt, joule, and pascal—measure different things (power, energy, and pressure, respectively) and don’t describe how often something repeats.

Frequency is how many times something repeats in a given amount of time. For waves and other repeating motions, it’s measured in cycles per second, and the standard unit for that is the hertz. One hertz means one cycle per second. So if a string on a guitar vibrates 440 times each second, its frequency is 440 Hz. Other terms you might see—watt, joule, and pascal—measure different things (power, energy, and pressure, respectively) and don’t describe how often something repeats.