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WorksheetsPhotoelectric effect (2)
Total questions: 15
Worksheet time: 10mins
•Frequency below which no electrons are emitted from metal surface is
angular frequency
minimum frequency
maximum frequency
threshold frequency
Energy absorbed by electron is used in
A) escaping the metal
B)increasing kinetic energy
C) both A and B
D) increasing frequency
The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. Plank’s constant is determined by:
the x-intercept
the Y-intercept
the gradient
the area under the graph
The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. The work function is determined by:
the X-intercept
the Y-intercept
the gradient
the area under the graph
The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. The threshold frequency is determined by:
the X-intercept
the-Y-intercept
the gradient
the area under the graph
The photoelectric effect is when:
electrons collide inside a metal to release photons
one incident metal electron releases one photon
one incident photon releases one electron from a metal
photons are absorbed in to metal ions releasing electrons
Which of the following is an example of light behaving like a particle?
interference
Doppler effect
diffraction
photoelectric effect
refraction effect
The theory of wave-particle duality states that all matter has properties of
•neither a particle nor a wave.
•just a particle and not a wave.
•just a wave and not a particle.
•either a particle or a wave.
•both a particle and a wave.
The ................................. ............................... is the minimum amount of energy required for an electron to be emitted from the surface of a metal plate.
(a)
A photon 11eV is incident on a metal which has a work function of 5eV. The max knetic energy of the photoelectrons is (a) eV.
The threshold frequency for photoelectric emission in ................................. is 7 x 1014 Hz and ...................... has the highest electron work function among these metals.
(a)
Stopping potential is .............................. on frequency of incident light and nature of the metal of photo cathode. It is .................................... on the intencity of the light.
(a)
Quantization is the concept that a physical quantity can have only certain (a) values.
The operating principle of which device is not based on the photoelectric effect?
automatic garage door openers
•Solar pannels
•flash of a camera
calculators
electronic mass scale
