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- 1. Multiple Choice
Which subatomic particle is negatively charged?
proton
neutron
electron
quark
- 2. Multiple Choice
Who used high voltages to pull electrons from a cathode and accelerate them to very high speeds before striking a target electrode?
Tesla
Rontgen
Maradona
Edison
- 3. 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
- 4. Multiple Choice
Which rays traveled in straight lines like particles but could pass through solid materials with little absorption?
Gamma rays
X rays
Photo rays
Rays
- 5. Multiple Choice
Who noted that x rays passing through a crystal lattice should undergo diffraction in the same way that visible light diffracts from a diffraction grating?
Elon Musk
Steve Jobs
Max von Laue
Tesla
- 6. Multiple Choice
What is the X-ray diffraction by crystals was soon confirmed experimentally, confirming that x rays are electromagnetic waves with wavelengths in the range?
0.01 nm to 10 nm
0.1 m to 0.2 m
5 km to 10 km
0.01 mm to 10 mm
- 7. Multiple Choice
What is inside the nucleus of the atom?
electrons and protons
protons and quarks
protons and neutrons
neutrons and electrons
- 8. Multiple Choice
The emission of electrons from a substance due to light striking its surface is called the?
photoelectric effect
photo effect
electric effect
photo photo
- 9. Multiple Choice
What are undulations of waves?
Left and right movements.
Up and left movements.
Down and right movements.
Up and down movements.
- 10. Multiple Choice
What happens to water waves when they hit a surface?
They retract.
They reflect.
They stop.
They cancel.
- 11. Multiple Choice
The current I is directly proportional to the light intensity. If the light intensity is doubled, the current also __________?
Decreased
Increased
Doubled
none
- 12. Multiple Choice
The value of the threshold frequency depends on the type of metal from which the ____________ is made?
Anode
Plastic
Cathode
Sand
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