Light Waves Amplify

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
These graphs show the wavelength and amplitude of light coming from three lasers. Could any of these lasers be giving off a different type of light?
Yes. Laser 2 could be giving off a different type of light because Laser 2 has a different wavelength than Lasers 1 and 3.
Yes. Laser 3 could be giving off a different type of light because Laser 3 has a different amplitude than Lasers 1 and 2.
Yes. All three lasers must be giving off different types of light because every light source gives off its own type of light.
No. All three lasers must be giving off the same type of light because all three are lasers, and the same kind of light source gives off the same type of light.
Tags
NGSS.HS-PS4-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the principle behind the amplification of light waves in a laser?
Stimulated emission
Spontaneous emission
Absorption
Reflection
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which component in a laser is responsible for amplifying light waves?
Optical cavity
Lens
Prism
Diffraction grating
Tags
NGSS.HS-PS4-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the context of light amplification, what does the term 'population inversion' refer to?
More electrons in excited states than in lower energy states
Equal number of electrons in excited and lower energy states
More electrons in lower energy states than in excited states
No electrons in excited states
Tags
NGSS.HS-PS4-3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a common application of amplified light waves?
Laser cutting
Radio broadcasting
Ultrasound imaging
Magnetic resonance imaging
Tags
NGSS.HS-PS4-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the role of a gain medium in a laser?
To amplify light by stimulated emission
To focus light
To reflect light
To absorb light
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How does a laser differ from ordinary light sources in terms of light wave properties?
Laser light is coherent and monochromatic
Laser light is incoherent and polychromatic
Laser light is incoherent and monochromatic
Laser light is coherent and polychromatic
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