AS Physics U14 Waves Checkpoint Quiz 1

A longitudinal wave travels through a long spring. The spring is shown at one instant. What is the wavelength of the wave?

A sound wave has a frequency of 2500 Hz and a speed of 1500 m.s^–1. What is the shortest distance from a point of maximum pressure in the wave to a point of minimum pressure?

A sound wave is displayed on the screen of a cathode-ray oscilloscope (c.r.o.) as shown. The time-base of the c.r.o. is set at 2.5 ms.cm^–1. What is the frequency of the sound wave?

The period of an electromagnetic wave is 1.0 ns. What are the frequency and wavelength of the wave?

Which statement about progressive longitudinal waves is not correct?

A bicycle gear wheel is a disc with 50 ‘teeth’ equally spaced around its edge, as shown. The gear wheel is rotated 10 times each second. A springy strip of metal is vibrated by the rotating ‘teeth’. The metal strip produces a sound of frequency that is equal to the frequency of vibration of the strip. The speed of sound in air is 330 m.s^–1. What is the wavelength of the emitted sound?

Which row describes the oscillations of two moving particles in a stationary wave that are separated by a distance of half a wavelength?

Two wave sources are oscillating in phase. Each source produces a wave of wavelength λ. The two waves from the sources meet at point X with a phase difference of 90°. What is a possible difference in the distances from the two wave sources to point X?

Which statement about electromagnetic waves in a vacuum is correct?

A transverse wave travels along a rope. The graph shows the variation of the displacement of the particles in the rope with distance along it at a particular instant. At which distance along the rope do the particles have maximum upwards velocity?