Properties of wave

Which labelled distance is the wavelength?

• A

• B

• C

• D

Which is a unit of wavelength?

• hertz

• meter

• meter per second

• second

Which waves are longitudinal?

• 
• 
• 
• 

The diagram represents a wave. How many wavelengths are there between X and Y?

• 2/3

• 1

• 3/2

• 3

An FM radio station broadcast signals of wavelength 4.0 m and frequency 100 kHz. What is their speed?

• 400 m/s

• 4,000 m/s

• 40,000 m/s

• 400,000 m/s

A boy throws a small stone into a pond. Waves spread out from where the stone hits the water and travel to the side of the pond. The boy notices that six waves reach the side of the pond in a time of 5.0 s. What is the frequency of the waves?

• 0.2 Hz

• 1.0 Hz

• 1.2 Hz

• 1.6 Hz

Sound waves of frequency 2.0 kHz travel through a substance at a speed of 800 m/s. What is the wavelength of the waves?

• 0.4 m

• 2.5 m

• 400 m

• 1,600 m

What is the frequency of this wave?

• 0.4 Hz

• 1 Hz

• 2 Hz

• 2.5 Hz

The wavelength for this wave is?

• 16 cm

• 20 cm

• 40 cm

• 80 cm

A kid on a playground swing makes 6 complete to-and-fro swings every 30 seconds. What is the period of the swinging ?

• 0.2 s

• 1 s

• 3 s

• 5 s