
Physics Midterm 2nd Term Grade 12

Flashcard
•
Physics
•
12th Grade
•
Hard
Ali Ayman
FREE Resource
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31 questions
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1.
FLASHCARD QUESTION
Front
What term is used to describe a perfect radiator and absorber of electromagnetic radiation?
Back
Blackbody
2.
FLASHCARD QUESTION
Front
What was the contradiction between observation and the classical electromagnetic theory prediction about blackbody radiation called?
Back
The ultraviolet catastrophe
3.
FLASHCARD QUESTION
Front
What were the units of light energy emitted by blackbody radiation originally called?
Back
Quanta
4.
FLASHCARD QUESTION
Front
What is the frequency of a photon with an energy of 1.99x10^-19 Joule?
Back
3x10^14 Hz
5.
FLASHCARD QUESTION
Front
What is the energy of a photon whose frequency is 6.0x10^20 Hz?
Back
2.5 MeV
6.
FLASHCARD QUESTION
Front
Light with an energy equal to three times the work function of a given metal causes the metal to eject photoelectrons. What is the ratio of the maximum photoelectron kinetic energy to the work function?
Back
2:1
7.
FLASHCARD QUESTION
Front
A monochromatic light beam with a quantum energy value of 3.0 eV is incident upon a photocell. The work function of the photocell is 1.6 eV. What is the maximum kinetic energy of the ejected electrons?
Back
1.4 eV
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