3.1. General properties of waves
A subsection of Physics, 5054, through 3. Waves
Listing 10 of 112 questions
A microwave signal from a transmitter on the Earth’s surface is sent up to a satellite in orbit and is then immediately transmitted back to Earth. A pulse of microwaves from the transmitter is received back at the transmitter 0.24 s later. The speed of microwaves is 3.0 × 108 m / s. Calculate the distance from the transmitter on the Earth to the satellite. distance = The microwave signal is used in a telephone system that produces sound. Waves are described as longitudinal or transverse. Some waves are also electromagnetic. Place ticks (✓) in the table in to show whether microwaves and sound waves are longitudinal or transverse and to show whether they are electromagnetic. longitudinal transverse electromagnetic microwaves sound A longitudinal wave contains a compression. Describe what is meant by a compression.
5054_s18_qp_22
THEORY
2018
Paper 2, Variant 2
View
A water wave in a ripple tank diffracts as it passes through the gap in a barrier. shows a drawing made by a student of the crests in the pattern. State one way in which the student’s drawing of the crests is wrong. The gap in the barrier is now made smaller than the wavelength, as shown in . Complete with at least three crests to show the new diffraction pattern. In one part of the ripple tank, the water wave has a speed of 6.0 cm / s and a wavelength of 2.0 cm. The wave then passes into a shallower region of the tank. The speed of the wave in the shallow region is 4.0 cm / s. Define the term ‘wavelength’. Calculate the frequency of the wave. frequency = Hz Calculate the wavelength of the wave in the shallow part of the tank. wavelength = cm
5054_s23_qp_21
THEORY
2023
Paper 2, Variant 1
View
Some waves are longitudinal and some waves are transverse. State how a longitudinal wave differs from a transverse wave. A vibrating rod produces a water wave in a ripple tank. shows the crests of the wave passing into the right-hand section of the tank where the depth of the water is different from the depth in the rest of the tank. vibrating rod wave crests depth of water different The arrows on show the direction of travel of the wave in the two sections of the ripple tank. In the left-hand section of the tank, the wavelength of the wave is 0.019 m and it travels at 0.17 m / s. Calculate the frequency of the wave. frequency = State what happens to the frequency of the wave, as it passes into the right-hand section of the tank. Using , state and explain what happens to the speed of the wave as it passes into the right-hand section of the tank. shows light, in air, striking the vertical side of a rectangular glass block at an angle of incidence of 60°. X P Y 60° r θ glass block The refractive index of the glass is 1.6. The light travels in the glass and strikes side XY at P. Underline all the terms that describe a light wave. electromagnetic longitudinal transverse At the point where the light enters the glass, the angle of refraction is r. Calculate angle r. r = 1. Calculate the critical angle c for light travelling in the block. c = 2. At P, the angle θ between the ray and the normal is given by θ = 90° – r. State and explain what happens to the light when it strikes side XY. 3. On , draw the path of the light after it strikes side XY at P and the path of the light when it is again travelling in the air.
5054_w18_qp_21
THEORY
2018
Paper 2, Variant 1
View
Questions Discovered
112