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- 1. Multiple Choice
The SI unit of frequency is the __________.
meter
second
hertz
meter per second
- 2. Multiple Choice
Which subatomic particle is negatively charged?
proton
neutron
electron
quark
- 3. Multiple Choice
True or False? The wavelength and frequency of all waves are inversely proportional to each other.
True
False
- 4. Multiple Choice
What's the name of the infamous experiment in Quantum Physics?
Double-Split Experiment
One-Slit Experiment
Double-Decker Experiment
Double-Slit Experiment
- 5. Multiple Choice
Photoelectrons will be ejected from a material surface if?
The threshold frequency is greater than the photon frequency
The work function is less than the photon energy
The intensity of light is high enough
The wavelength of photon is maximum
- 6. Multiple Choice
A monochromatic light beam with a quantum energy of 9.0 eV is incident upon a photocell. The work function of the photocell is 4.1 eV. What is the maximum kinetic energy of the electron.
4.2 eV
4.4 eV
4.7 eV
4.9 eV
- 7. Multiple Choice
In an experiment, photoelectric effect is observed in metal A when light with frequency (f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons
Will not be ejected
Will be ejected as observed in the previous
Will be ejected with greater number of photoelectrons
Will be ejected with greater kinetic energy
- 8. Multiple ChoiceThe photoelectric effect only occurs if the light shining on the metal is:coherent.above a minimum intensity.above a minimum frequency.above a minimum wavelength.
- 9. Multiple Choice
Wave -particle duality is supported by...
electrons behaving as particles with ordinary matter
electrons behaving as waves when travelling through space
the photo electric effect
all of the above
- 10. Multiple Choice
the minimum frequency for which the photoelectric effect can occur is called the
absolute frequency
cut off frequency
Lyman frequency
threshold frequency
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