

CO2 LASER
Interactive Video
•
Engineering
•
University
•
Practice Problem
•
Hard
Dr. Mary
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the three different modes of vibration for a CO2 molecule?
Symmetric stretching, asymmetric stretching, and bending.
Linear, angular, and rotational.
Translational, rotational, and vibrational.
Compressive, expansive, and torsional.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the gaseous mixture used as the active medium in a CO2 laser, and in what ratio are they typically mixed?
Carbon dioxide, Nitrogen, and Helium in a 3:2:1 ratio.
Carbon monoxide, Oxygen, and Argon in a 1:1:1 ratio.
Carbon dioxide, Oxygen, and Neon in a 2:1:3 ratio.
Nitrogen, Oxygen, and Helium in a 3:1:2 ratio.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a Brewster window in a CO2 laser?
To polarize the laser light.
To reflect the laser light.
To absorb excess energy.
To cool the discharge tube.
4.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Are you enjoying the video lesson?
Yes
No
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which gas in the CO₂ laser mixture acts as a long-lived energy reservoir and transfers vibrational energy to CO₂?
Helium (He)
Nitrogen (N₂)
Hydrogen (H₂)
Xenon (Xe)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to a nitrogen molecule when it collides with an electron?
It gets ionized.
It goes to its first vibration level.
It breaks into individual atoms.
It becomes a free electron.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a CO2 molecule get elevated to the asymmetric stretching level after colliding with an excited nitrogen molecule?
Due to ionization of the CO2 molecule.
Because of a chemical reaction between nitrogen and CO2.
Due to matching energy levels and resonant energy transfer.
Through absorption of visible light.
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