Wave Properties and Relationships

The video tutorial covers the properties of waves, focusing on frequency, period, and speed. It explains the independence of amplitude and wavelength, the inverse relationship between frequency and period, and how frequency affects wavelength. The tutorial also introduces the concept of wave speed and provides formulas for calculating it. Practical examples are used to illustrate these concepts, enhancing understanding of wave behavior.

Which of the following statements is true about amplitude and wavelength?

• Amplitude and wavelength are directly proportional.

• A large amplitude always means a long wavelength.

• Amplitude and wavelength are independent of each other.

• A small amplitude always means a short wavelength.

What happens to the wavelength when the frequency of a wave increases?

• The wavelength doubles.

• The wavelength becomes shorter.

• The wavelength remains the same.

• The wavelength becomes longer.

If a wave repeats itself 10 times in one second, what is its frequency?

• 20 Hertz

• 10 Hertz

• 5 Hertz

• 15 Hertz

How is the period of a wave defined?

• The height of the wave from the center line.

• The number of repetitions in a second.

• The distance between two peaks.

• The time taken for one complete cycle.

What is the relationship between frequency and period?

• They are equal.

• They are unrelated.

• They are inversely proportional.

• They are directly proportional.

What does the speed of a wave represent?

• The amplitude of the wave.

• The frequency of the wave.

• How fast the disturbance moves from the source.

• How fast the medium vibrates up and down.

Which formula is used to calculate the speed of a wave?

• Speed = Wavelength / Amplitude

• Speed = Wavelength x Frequency

• Speed = Frequency / Period

• Speed = Amplitude x Frequency

If the frequency of a sound wave is 440 Hz and the wavelength is 75 cm, what is the speed of sound?

• 330 m/s

• 440 m/s

• 75 m/s

• 220 m/s

What unit conversion is necessary when calculating wave speed using wavelength in centimeters?

• No conversion is necessary.

• Convert centimeters to kilometers.

• Convert centimeters to millimeters.

• Convert centimeters to meters.

If a radio broadcast has a frequency of 98.7 MHz, what is the wavelength if the speed of the wave is 3 x 10^8 m/s?

• 4.05 meters

• 2.03 meters

• 1.02 meters

• 3.04 meters