Prepare for the ACVREP Orientation and Mobility (OandM) Exam. Use our study aids and multiple-choice questions, each with detailed explanations. Boost your confidence and succeed!

Multiple Choice

What is the unit of frequency?

Frequency tells you how many times something happens in one second. The unit for that is the hertz, often written Hz, and one hertz equals one cycle per second (which is the same as 1 s^-1). The hertz is named after Heinrich Hertz in recognition of his work with waves. Other terms measure different things: decibels measure sound level or intensity on a logarithmic scale, lumens measure how much light is produced or perceived, and newtons measure force. This is why Hertz is the correct choice for the unit of frequency.

Frequency tells you how many times something happens in one second. The unit for that is the hertz, often written Hz, and one hertz equals one cycle per second (which is the same as 1 s^-1). The hertz is named after Heinrich Hertz in recognition of his work with waves.

Other terms measure different things: decibels measure sound level or intensity on a logarithmic scale, lumens measure how much light is produced or perceived, and newtons measure force. This is why Hertz is the correct choice for the unit of frequency.