
Photoelectric Effect

Flashcard
•
Physics
•
11th Grade
•
Easy
Truthy Pradeep
Used 1+ times
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6 questions
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1.
FLASHCARD QUESTION
Front
What is the photoelectric effect?
Back
The phenomenon of emission of electrons from a metal surface when radiation of appropriate frequency is incident on it.
2.
FLASHCARD QUESTION
Front
What type of radiation is necessary for metals like zinc, cadmium, and magnesium to exhibit the photoelectric effect?
Back
Ultraviolet radiation is necessary for metals like zinc, cadmium, and magnesium.
3.
FLASHCARD QUESTION
Front
What type of radiation is sufficient for alkali metals to exhibit the photoelectric effect?
Back
Visible radiation is sufficient for alkali metals.
4.
FLASHCARD QUESTION
Front
Who discovered the photoelectric effect?
Back
Heinrich Hertz discovered the photoelectric effect in 1887.
5.
FLASHCARD QUESTION
Front
What is the threshold frequency in the context of the photoelectric effect?
Back
The minimum frequency of incident radiation required to eject electrons from a metal surface.
6.
FLASHCARD QUESTION
Front
How does the intensity of light affect the photoelectric effect?
Back
The intensity of light affects the number of electrons emitted but not their kinetic energy.
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