What is the role of the cathode in the photoelectric effect experiment?
The Photoelectric Effect : Light and Electrons

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Chemistry, Science, Engineering, Physics
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10th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It measures the frequency of light.
It attracts electrons towards it.
It provides a source of light.
It emits electrons when light falls on it.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when violet light is shone on a metal surface in the photoelectric effect experiment?
The light is absorbed without any effect.
No electrons are ejected.
The metal surface heats up.
Electrons are ejected immediately.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does red light fail to produce the photoelectric effect on potassium metal?
Its frequency is below the threshold frequency.
It is not intense enough.
It has too high a frequency.
It is absorbed by the metal.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the threshold frequency in the context of the photoelectric effect?
The frequency at which no electrons are ejected.
The frequency at which light is most intense.
The maximum frequency that can be absorbed by the metal.
The minimum frequency needed to eject electrons.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does increasing the intensity of violet light affect the photoelectric effect?
It stops the ejection of electrons.
It changes the threshold frequency.
It decreases the kinetic energy of electrons.
It increases the number of electrons ejected.
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