The Photoelectric Effect (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the photoelectric effect?
What is the photoelectric effect?
Emission of electrons when light hits a surface
What did Philipp Lenard discover in 1902 about ejected electrons?
What did Philipp Lenard discover in 1902 about ejected electrons?
Max velocity was independent of light intensity
What did Einstein propose light is made up of?
What did Einstein propose light is made up of?
Packets of energy called quanta (photons)
What is the work function ()?
What is the work function ()?
Min energy to knock an electron out of metal
Which formula relates work function to threshold frequency?
Which formula relates work function to threshold frequency?
What is Einstein's photoelectric equation?
What is Einstein's photoelectric equation?
What is the threshold frequency?
What is the threshold frequency?
Min frequency below which no electrons emitted
What does light intensity affect in the photoelectric effect?
What does light intensity affect in the photoelectric effect?
Number of photons, not their energy
What determines the max kinetic energy of emitted electrons?
What determines the max kinetic energy of emitted electrons?
Frequency of incident light
What process do solar cells use that is similar to photoelectric effect?
What process do solar cells use that is similar to photoelectric effect?
Photovoltaic effect
