Photoelectric effect
Physics
10th - 12th Grade
NGSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Photoelectric effect provides the evidence for the ______ nature of radiation.
dual
wave
particle
electromagnetic
Tags
NGSS.HS-PS4-3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If the brightness of a beam of light increases without changing its color, the ______ will increase.
number of photons
frequency of the light
energy of the photons
wavelength of the photons
Tags
NGSS.HS-PS4-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Light of a given wavelength is used to illuminate the surface of a metal. However, no photoelectrons are emitted. In order to cause electrons to be ejected, light of __________ should be used.
lower energy
higher intensity
shorter frequency
higher frequency
Tags
NGSS.HS-PS4-4
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the energy, in eV, of a photon that has a wavelength of 620 nm?
1eV
2eV
3eV
4eV
Tags
NGSS.HS-PS4-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The energy of a photon is directly proportional to its _____ and inversely proportional to its ______.
intensity - speed
wavelength - frequency
frequency - wavelength
intensity - wavelength
Tags
NGSS.HS-PS4-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the graph to find the threshold frequency.
−12×10-19 Hz
0 Hz
2×1015 Hz
4×1015 Hz
Tags
NGSS.HS-PS4-4
NGSS.HS-PS4-1
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
In the photoelectric effect, if the incident photons have a wavelength that is larger than the threshold wavelength, _______.
electrons will be ejected from the metal surface
there will be photoelectric current
no electrons will be emitted from the metal surface
the kinetic energy of the ejected electrons increases
Tags
NGSS.HS-PS4-4
NGSS.HS-PS4-3
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