Font size
WorksheetsWaves. sound and lights
Total questions: 26
Worksheet time: 41mins
Which of the following is an example of a mechanical wave?
Light wave
X-ray wave
Sound wave
Radio wave
What is the time for one complete wave cycle called?
Frequency
Wavelength
Period
Amplitude
Which type of wave has a disturbance perpendicular to its direction of propagation?
Periodic wave
Transverse wave
Longitudinal wave
Pulse wave
What is the number of waves per unit time called?
Frequency
Wavelength
Period
Amplitude
Which type of wave has a disturbance parallel to its direction of propagation?
Periodic wave
Pulse wave
Longitudinal wave
Transverse wave
What is the distance between adjacent identical parts of a wave called?
Wavelength
Frequency
Amplitude
Period
How are the wave velocity and the wavelength related to the wave’s frequency?
v = λ * T
v = f * λ
v = λ / T
v = f / λ
What is the maximum displacement of a wave from its rest position called?
Frequency
Wavelength
Amplitude
Period
A mechanical wave travels from point A to point B. Which is true about this process?
The wave transferred energy from A to B.
The wave transferred matter from A to B.
The wave transferred energy and matter from A to B.
The wave did not move matter or energy from A to B. (It only moved them in place.)
If a wave has a frequency of 20 Hz and a wavelength of 2.5 m, how fast is it traveling?
30 m/s
40 m/s
50 m/s
60 m/s
If a wave has a wavelength of 3 m and is traveling at 60 m/s, what is its frequency?
10 Hz
15 Hz
20 Hz
25 Hz
What type of interference do noise cancelling headphones use?
Constructive Interference
Destructive Interference
A certain photon of light has a wavelength of 4.22x10-7nm. What is the frequency? (v=c/λ)
7.11x1014 Hz
7.11Hz
1.41x10-15
-1.41x1015
What is the energy of a quantum of light with a frequency of 7.39x1014Hz.(E=Hv)
4.88x1019
4.88x10-19
2.22x1023
2.22x10-23
A light has a wavelength of 5.06x10-7m. What is the frequency of the light? What is the color of light? (v=c/λ)
16.87Hz, Red
5.93Hz, Orange
5.93x10-14Hz, Blue
5.93x1014Hz, Green
Which statement is true regarding the effect of increasing light frequency in the photoelectric effect?
Increasing intensity increases kinetic energy of electrons.
Increasing wavelength increases kinetic energy of electrons.
Increasing amplitude increases kinetic energy of electrons.
Increasing frequency increases kinetic energy of electrons.
What happens if the frequency of light is below the threshold frequency in the photoelectric effect?
No photoelectric effect occurs below the threshold intensity.
No photoelectric effect occurs below the threshold frequency.
The photoelectric effect occurs with reduced intensity.
The photoelectric effect occurs with increased intensity.
What did experiments reveal about the relationship between light frequency and the photoelectric effect?
The kinetic energy of ejected electrons depends on light intensity.
The kinetic energy of ejected electrons depends on light frequency.
The number of ejected electrons depends on light frequency.
The number of ejected electrons depends on light wavelength.
What did experiments show about the timing of electron ejection in the photoelectric effect?
Electrons are ejected after a delay when light is shone on a metal.
Electrons are ejected only if the light is very bright.
Electrons are ejected immediately when light is shone on a metal.
Electrons are ejected only if the light is very dim.
What happens when the intensity of light is increased in the photoelectric effect?
The concept of matter wave was suggested by
Heisenberg
de Broglie
Schrodinger
Niels Bohr
Radiation and matter that has the properties of both particle and wave is called
confusion
mixing
entanglement
wave-particle duality
In an electron microscope , light source is replaced by the beam of very fast moving __________.
neutron
proton
electron
photon
Max Planck's great discovery was that radiation energy is emitted in packets that he called
quanta
wave functions
photons
electrons
Calculate the energy of a 750 nm light photons.
Given: E = hf, c = fƛ, h = 6.63 × 10–34 Js, c = 3.00 × 108 ms–1
1.65 × 10–19 J
2.65 × 10–19 J
3.65 × 10–19 J
4.65 × 10–19 J
Select all that apply. A blackbody
absorbs radiation
emits radiation
reflects radiation
generates radiation
