Wavelength

The video tutorial explains the concept of wave cycle length, highlighting the small wavelengths of visible light, which can be a few hundred nanometers. It also covers the wavelengths of sound in air, which vary from a few centimeters to nearly 20 meters, depending on the frequency.

What is the term used to describe the length of a complete cycle of a wave?

• Amplitude

• Frequency

• Velocity

• Wavelength

How small can the wavelengths of visible light be?

• A few meters

• A few hundred nanometers

• A few centimeters

• A few millimeters

In what unit are the wavelengths of visible light typically measured?

• Kilometers

• Nanometers

• Centimeters

• Meters

What is the range of sound wavelengths in air that we can hear?

• From a few meters to a few kilometers

• From a few centimeters to almost 20 meters

• From a few millimeters to a few centimeters

• From a few nanometers to a few micrometers

Which of the following best describes the variation in sound wavelengths in air?

• They are constant regardless of frequency.

• They vary from a few centimeters to almost 20 meters.

• They are always less than a meter.

• They are measured in nanometers.