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Worksheetsquantum physics
Total questions: 20
Worksheet time: 10mins
What's the name of the infamous experiment in Quantum Physics?
Double-Split Experiment
One-Slit Experiment
Double-Decker Experiment
Double-Slit Experiment
When the top of one wave meets the bottom of another wave, they...
call each other out.
cancel each other out.
cancel each other off.
don't cancel each other out.
An Interference Pattern appears when...
two particles interact with each other.
waves interact with particles.
two waves interact with each other.
particles interact with particles.
What does the observer do?
The observer collapses the wave function into particle.
The observer collapses the particle into a wave function.
The observer collapses the whole system simply by observing.
The observer collapses the wave function into a wave.
What are undulations of waves?
Left and right movements.
Up and left movements.
Down and right movements.
Up and down movements.
Photoelectrons will be ejected from a material surface if?
The threshold frequency is greater than the photon frequency
The work function is less than the photon energy
The intensity of light is high enough
The wavelength of photon is maximum
In an experiment, photoelectric effect is observed in metal A when light with frequency (f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons
Will not be ejected
Will be ejected as observed in the previous
Will be ejected with greater number of photoelectrons
Will be ejected with greater kinetic energy
A metal surface is struck with light of λ = 400 nm, releasing a stream of electrons. If the 400 nm light is replaced by λ= 300 nm light of the same intensity, what is the result?
More electrons are emitted in a given time interval
Fewer electrons are emitted in a given time interval
Emitted electrons are more energetic
Emitted electrons are less energetic
A metal surface is struck with light of λ = 400 nm, releasing a stream of electrons. If the light intensity is increased (without changing λ ), what is the result?
More electrons are emitted in a given time interval
Fewer electrons are emitted in a given time interval
Emitted electrons are more energetic
Emitted electrons are less energetic
True or False? The wavelength and frequency of all waves are inversely proportional to each other.
True
False
Which of the following colors of visible light has the highest frequency?
Blue
Green
Orange
Red
Violet
Planck's constant can be found ...
energy of a particle x speed of light / wavelength
energy of a particle x speed of light / frequency of light
energy of a particle x wavelength / speed of light
slope of the cut-off voltage vs frequency graph
De Broglie equation
relates the momentum of a mass to its wavelength
relates the energy of a mass to its wavelength
relates the frequency of a mass to its wavelength
relates the work function of a mass to its wavelength
the minimum frequency for which the photoelectric effect can occur is called the
absolute frequency
cut off frequency
Lyman frequency
threshold frequency
The energy of an emitted photon can be calculated from ...
Plancks constant x frequency of the photon
h x c / wavelength of the light emitted
the difference in the energy levels
all of the above
If waves can behave like particles, then particles can behave like a wave. This is the idea behind...
Quantization of Energy
Photoelectric Effect
Compton Effect
deBroglie Waves
Uncertainty Principle
The energy of a particle trapped inside an infinite deep potential well is 8 eV. If the width of the well is halved then it's energy becomes
2 eV
4 eV
16 eV
32 eV
Name the scientist who created an equation to treat the electron as a wave
Planck
Heisenberg
de Broglie
Schrodinger
Which of the following is correct related to black body radiation curve?
Plank's formula could explain the radiation curve in all frequency range.
Wien's formula for radiation energy distillation well explains the distribution of energy in high frequency range.
Rayleigh-Jean's formula well matches with the radiation curve in low frequency range.
All the above
