Do You Really Know About Laser Light? Trivia
Embark on an illuminating journey into the fascinating realm of laser light with our "Do You Really Know About Laser Light? Trivia" quiz! Explore the principles, applications, and intriguing facts surrounding laser technology that has revolutionized various fields. From the mesmerizing science behind coherent light to the diverse applications in medicine, industry, and beyond, this quiz promises an enlightening experience. Delve into the intricacies of laser physics, uncover the pioneers who shaped this cutting-edge technology, and unravel the myriad ways laser light has transformed our world.
Whether you're a laser enthusiast or simply curious about the wonders of photonics, each Read morequestion will illuminate different facets of laser science, from its humble beginnings to its contemporary breakthroughs. Challenge yourself and discover the brilliance behind lasers as you navigate through questions designed to entertain, educate, and spark your curiosity. Prepare to be dazzled by the spectrum of knowledge awaiting you in this laser-focused trivia adventure!
Laser Light Questions and Answers
- 1.
The first laser used was :
- A.
Diode
- B.
Alexandrite
- C.
Ruby
- D.
NDYag
Correct Answer
C. RubyExplanation
The correct answer is Ruby. The first laser used was a ruby laser. It was developed in 1960 by Theodore Maiman and was the first laser to be successfully operated. The ruby laser uses a synthetic ruby crystal as the gain medium and produces a red-colored laser beam. This breakthrough in laser technology paved the way for further advancements and applications in various fields.Rate this question:
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- 2.
What is laser light?
- A.
Diffuse Light
- B.
Filtered Light
- C.
Polychromatic Light
- D.
Monochromatic Light
Correct Answer
D. Monochromatic LightExplanation
Monochromatic light refers to light that consists of a single wavelength or color. Unlike polychromatic light, which contains a range of wavelengths, monochromatic light is uniform and has a specific frequency. Laser light is an example of monochromatic light because it is produced by amplifying a single wavelength of light. This allows laser light to be highly focused and coherent, making it useful in various applications such as telecommunications, medical procedures, and scientific research.Rate this question:
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- 3.
Name the plastic container used to dispose used needles:
- A.
Trash Can
- B.
Isolyser
- C.
Autoclave
- D.
Probe Holder
Correct Answer
B. IsolyserExplanation
The correct answer is Isolyser. The Isolyser is a plastic container specifically designed for the safe disposal of used needles. It is designed with a secure lid to prevent accidental needle stick injuries and is often used in medical facilities and laboratories to ensure proper disposal of sharps waste. The Isolyser helps to minimize the risk of infections and injuries associated with improper disposal of needles.Rate this question:
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- 4.
The object that absorbs the light in laser is called:
- A.
Chromophore
- B.
Emission
- C.
Nanometer
- D.
Resonator
Correct Answer
A. ChromopHoreExplanation
A chromophore is a molecule or ion that absorbs specific wavelengths of light and gives color to compounds. In the context of lasers, the object that absorbs light is called a chromophore. When the chromophore absorbs the light energy, it can undergo a stimulated emission process, leading to the amplification of light and the generation of a laser beam. Therefore, the correct answer is Chromophore.Rate this question:
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- 5.
Which material is commonly used as the gain medium in a laser?
- A.
Glass
- B.
Water
- C.
Diamond
- D.
Helium-Neon gas mixture
Correct Answer
D. Helium-Neon gas mixtureExplanation
The correct answer is Helium-Neon gas mixture. In a Helium-Neon laser, the mixture of helium and neon gases serves as the gain medium, where stimulated emission of photons occurs.Rate this question:
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- 6.
What does the acronym LASER stand for?
- A.
Light Amplification by Stimulated Emission of Radiation
- B.
Light Amplification by Saturated Emission of Radiation
- C.
Light adjusted by Stimulated Emission of Radiation
- D.
Laser Amplification by Stimulated Emission of Radiation
Correct Answer
A. Light Amplification by Stimulated Emission of RadiationExplanation
The correct answer is "Light Amplification by Stimulated Emission of Radiation." This acronym accurately describes the process of laser operation, where light is amplified through stimulated emission of radiation.Rate this question:
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- 7.
What is Ruby Wavelength?
- A.
694.3nm
- B.
755.0nm
- C.
1064 nm
- D.
800 nm
Correct Answer
A. 694.3nmExplanation
Ruby wavelength refers to the specific wavelength of light emitted by a ruby laser. In this case, the correct answer is 694.3nm, which represents the wavelength of light produced by a ruby laser.Rate this question:
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- 8.
Because the Laser uses rapid pulse shortwave energy, it is most often compared to :
- A.
Galvanic
- B.
Chemical decomposition
- C.
Saturated light
- D.
Thermolysis
Correct Answer
D. ThermolysisExplanation
Thermolysis is the most appropriate comparison for the Laser's use of rapid pulse shortwave energy. Thermolysis refers to the process of using heat to break down or destroy something, which aligns with the Laser's mechanism of action. The rapid pulse shortwave energy emitted by the Laser generates heat that targets and destroys the targeted tissue or hair follicles. This makes Thermolysis the most suitable comparison among the given options.Rate this question:
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- 9.
The state of an atom, just below a higher excited state, which an electron occupies momentarily before destabilizing and emitting light (the upper of the two lasing levels) is called:
- A.
Singlet
- B.
Ground
- C.
Nanometer
- D.
Metastable
Correct Answer
D. MetastableExplanation
A metastable state refers to the state of an atom that is just below a higher excited state. In this state, an electron occupies the level momentarily before destabilizing and emitting light. This state is important in laser technology as it represents the upper of the two lasing levels. It is called metastable because it is relatively long-lived compared to other excited states, allowing for the emission of light.Rate this question:
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- 10.
State that light absorbtion is required for an effect in tissue:
- A.
Fitzpatrick Skin Types
- B.
Electromagnetic Spectrum
- C.
Grothus Draper Law
- D.
Thermal Relaxation time
Correct Answer
C. Grothus Draper LawExplanation
The Grothus Draper Law states that the amount of light absorbed by a substance is directly proportional to the concentration of the substance and the path length of the light through the substance. In the context of tissue, light absorption is required for various effects such as photothermal therapy or photobiomodulation. This law helps explain how the absorption of light by tissue can lead to specific therapeutic or biological responses.Rate this question:
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- 11.
In laser without absorption there is:
- A.
No effect/ damage observed
- B.
High level of damage to the skin
- C.
Radiant energy relased in the tissue
- D.
Successful level of hair removal
Correct Answer
A. No effect/ damage observedExplanation
In laser without absorption, there is no effect or damage observed because without absorption, the laser energy is not absorbed by the target tissue. Absorption is necessary for the laser energy to be converted into heat, which can then cause damage or have an effect on the skin or tissue. Without absorption, the laser energy passes through the tissue without causing any noticeable impact.Rate this question:
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- 12.
How is low-level laser therapy (LLLT) commonly used in the context of erythema?
- A.
To induce erythema for therapeutic purposes
- B.
To reduce inflammation and promote healing
- C.
To prevent the occurrence of erythema
- D.
To increase blood flow and exacerbate erythema
Correct Answer
B. To reduce inflammation and promote healingExplanation
Low-level laser therapy (LLLT) is often used to treat erythema by reducing inflammation and promoting the healing process. The low-level laser light is applied to the affected area, and its anti-inflammatory effects can help alleviate redness and discomfort associated with erythema. This non-invasive approach has shown promise in various dermatological conditions where erythema is a prominent feature.Rate this question:
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- 13.
What substance does laser energy target in the hair shaft and hair follicule to achieve the hair removal?
- A.
Keratin
- B.
Moisture
- C.
Melanin
- D.
Salty Water
Correct Answer
C. MelaninExplanation
Laser energy targets melanin in the hair shaft and hair follicle to achieve hair removal. Melanin is the pigment responsible for the color of our hair and skin. When the laser energy is absorbed by the melanin, it converts into heat, which damages the hair follicle and inhibits future hair growth. This process is effective because the laser energy is specifically absorbed by the melanin, leaving the surrounding skin and tissues unharmed.Rate this question:
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- 14.
The Longer the wavelength the:
- A.
Shorter penetration of laser
- B.
Less penetration of laser
- C.
Greater Penetration of laser
- D.
Minimal penetration of laser
Correct Answer
C. Greater Penetration of laserExplanation
The answer "Greater Penetration of laser" is correct because the longer the wavelength of a laser, the deeper it can penetrate into a material. This is because longer wavelengths have lower energy levels, allowing them to pass through materials with less absorption or scattering. Therefore, lasers with longer wavelengths are more suitable for applications that require deep penetration, such as medical procedures or material cutting.Rate this question:
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- 15.
What is the process of "population inversion" in the context of laser operation?
- A.
When the number of excited atoms is greater than the number of ground-state atoms
- B.
When the number of ground-state atoms is greater than the number of excited atoms
- C.
When all atoms are in the ground state
- D.
When atoms move to a higher energy state spontaneously
Correct Answer
A. When the number of excited atoms is greater than the number of ground-state atomsExplanation
The correct answer is When the number of excited atoms is greater than the number of ground-state atoms. Population inversion occurs when more atoms are in an excited state than in the ground state, a necessary condition for laser amplification through stimulated emission.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Feb 01, 2024Quiz Edited by
ProProfs Editorial Team -
Oct 02, 2012Quiz Created by
Meivys123
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