Properties & EM Waves

Which of the following statements about waves is correct?

• Waves can be produced on ropes.

• Waves are a way of transferring energy from place to place.

• There are two types of wave: longitudinal and transverse.

• All of the above.

Complete the sentence:

The amplitude of a wave is

• the time it takes for one complete oscillation of the wave.

• the number of waves per second.

• the maximum displacement from the rest position.

• the distance between two successive points on a wave.

Complete the sentence:

The wavelength of a wave is

• the time it takes for one complete oscillation of the wave.

• the number of waves per second.

• the maximum displacement from the rest position.

• the distance between two successive points on a wave.

Which of the following statements best describes a transverse wave?

• a wave that vibrates at right angles to the direction of energy transfer

• a wave that vibrates parallel to the direction of energy transfer

• a sound wave

• a wave that crosses other wavefronts

Which of the following is the unit of frequency?

• m/s

• s

• Hz

• m

A cyclist rotates the pedals of his bike twice in 1 second. What is the frequency at which he is turning?

• 2 Hz

• 1 Hz

• 0.5 Hz

• 20 Hz

The wave machine at a swimming pool oscillates at a frequency of 0.25 Hz. What is the time period of the wave?

• 25 s

• 0.25 s

• 4 s

• 40 s

A tuning fork creates a sound wave with a frequency of 250 Hz. The wavelength of the wave is 1.36 m. What is the speed of sound?

• 0.005 m/s

• 340 m/s

• 184 m/s

• 184 s

A dolphin sends out a call to another dolphin at a frequency of 130 Hz. The speed of sound in water is 1400 m/s. What is the wavelength of the wave?

• 11 m

• 0.1 m

• 182 m

• 101 m

Which of the following statements best describes the law of reflection?

• The angle of incidence is greater than the angle of reflection.

• The angle of reflection is greater than the angle of incidence.

• The angle of incidence is equal to the angle of reflection.

• None of the above.