Electrolysis
Electrolysis IBEC Laser State Board
Practice Test 2018 UPDATED 2025
Laser stands for what? - Correct Ans-Light
Amplification by
Stimulated
Emission of
Radiation
What is the distance measured in nanometers between two peaks or two troughs known
as? - Correct Ans-Wavelength
Light of only one color & one specific wavelength is known as? - Correct Ans-
Monochromatic
Refraction is also known as what? - Correct Ans-Transmission
The process where by a newly created photon of light (generated through amplification)
acquires energy equal to the photons that created it is known as? - Correct Ans-
Stimulated Emission
The states of equilibrium or middle state of light - Correct Ans-Metastable State
Who theorized stimulated emission? - Correct Ans-Albert Einstein
The part of the laser that contains the active medium is called? - Correct Ans-Resinator
cavity
What are the states of light in stimulated emission? - Correct Ans-Ground State
Excited State
Singlet State
Metastable State
Alexandrite laer is in the visible light spectrum at what wavelength? - Correct Ans-755
nm
The Nd:YAG laser falls in the invisible light spectrum with a wavelength of what? -
Correct Ans-1064 nm
What type of wave is used in laser hair removal? - Correct Ans-Pulsed wave
A chromophore is also know at what? - Correct Ans-Target
The chromophore absorbs what? - Correct Ans-Energy
1|Page
,Electrolysis
Goggles worn by the patient and practitioner must be approved by which group? -
Correct Ans-ANSI (American National Standard Institute) for Class 3B and Class 4
Lasers
Each laser wavelength is what to its machine? - Correct Ans-Specific
What are the parameters when doing laser hair removal? - Correct Ans-Wavelength
Spot Size
Fluence
Pulse Width
Pulsed lasers allow for selective heating of specific targets, this is also known as? -
Correct Ans-Selective Photothermolysis
The rate/amount of energy delivered within a given area is known as? - Correct Ans-
Fluence
An increase in fluence equals an increase in what? - Correct Ans-Heat. Resulting in
more damage
The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - Correct Ans-Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser is
what? - Correct Ans-Q Switched
A Q switched laser is used for what? - Correct Ans-Tattoo removal
Which skin types can tolerate an Alex laser? - Correct Ans-1-4
Which skin types can tolerate a Nd:YAG laser? - Correct Ans-All skin types
Which skin type should only have electrolysis and no laser? - Correct Ans-Type 1
If the pulse width is greater than the thermal relaxation time it results in? - Correct Ans-
A burn
If the pulse width is less than or equal to the thermal relaxation time it results in? -
Correct Ans-Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) - Correct Ans-
Longer
Smaller structures have _______ thermal relaxation times (TRT) - Correct Ans-Shorter
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, Electrolysis
What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - Correct Ans-Long
Longer pulse widths are for what skin type? - Correct Ans-4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? -
Correct Ans-Short
Shorter pulse widths are for what skin type? - Correct Ans-1-3
What percentage of follicles are damaged with each laser treatment? - Correct Ans-15%
What is a long-term stable reduction of the growing hairs after a treatment regime? -
Correct Ans-Laser Hair Removal (LHR)
What does the FDA call laser hair removal? - Correct Ans-Permanent hair reduction
What is the highest setting the skin can tolerate without damage called? - Correct Ans-
Fluence Threshold
What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - Correct Ans-Patient Threshold
The amount of hair per one square centimeter is known as? - Correct Ans-Hair density
The higher the hair density, the _______ the fluence? - Correct Ans-Lower
What percentage of overlapping do you want when doing LHR? - Correct Ans-30%
Darker/tanned skin requires what kind of fluence? - Correct Ans-Lower
What should you never use to clean a patient's skin prior to LHR? - Correct Ans-Alcohol
Pulse duration is measured in what unit? - Correct Ans-milliseconds (ms)
Spot size is measured in what unit? - Correct Ans-millimeters (mm)
Repetition rate is measured in what unit? - Correct Ans-hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - Correct Ans-Rox Anderson
The formula for fluence is? - Correct Ans-Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? - Correct Ans-
Selective photothermolysis
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Electrolysis IBEC Laser State Board
Practice Test 2018 UPDATED 2025
Laser stands for what? - Correct Ans-Light
Amplification by
Stimulated
Emission of
Radiation
What is the distance measured in nanometers between two peaks or two troughs known
as? - Correct Ans-Wavelength
Light of only one color & one specific wavelength is known as? - Correct Ans-
Monochromatic
Refraction is also known as what? - Correct Ans-Transmission
The process where by a newly created photon of light (generated through amplification)
acquires energy equal to the photons that created it is known as? - Correct Ans-
Stimulated Emission
The states of equilibrium or middle state of light - Correct Ans-Metastable State
Who theorized stimulated emission? - Correct Ans-Albert Einstein
The part of the laser that contains the active medium is called? - Correct Ans-Resinator
cavity
What are the states of light in stimulated emission? - Correct Ans-Ground State
Excited State
Singlet State
Metastable State
Alexandrite laer is in the visible light spectrum at what wavelength? - Correct Ans-755
nm
The Nd:YAG laser falls in the invisible light spectrum with a wavelength of what? -
Correct Ans-1064 nm
What type of wave is used in laser hair removal? - Correct Ans-Pulsed wave
A chromophore is also know at what? - Correct Ans-Target
The chromophore absorbs what? - Correct Ans-Energy
1|Page
,Electrolysis
Goggles worn by the patient and practitioner must be approved by which group? -
Correct Ans-ANSI (American National Standard Institute) for Class 3B and Class 4
Lasers
Each laser wavelength is what to its machine? - Correct Ans-Specific
What are the parameters when doing laser hair removal? - Correct Ans-Wavelength
Spot Size
Fluence
Pulse Width
Pulsed lasers allow for selective heating of specific targets, this is also known as? -
Correct Ans-Selective Photothermolysis
The rate/amount of energy delivered within a given area is known as? - Correct Ans-
Fluence
An increase in fluence equals an increase in what? - Correct Ans-Heat. Resulting in
more damage
The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - Correct Ans-Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser is
what? - Correct Ans-Q Switched
A Q switched laser is used for what? - Correct Ans-Tattoo removal
Which skin types can tolerate an Alex laser? - Correct Ans-1-4
Which skin types can tolerate a Nd:YAG laser? - Correct Ans-All skin types
Which skin type should only have electrolysis and no laser? - Correct Ans-Type 1
If the pulse width is greater than the thermal relaxation time it results in? - Correct Ans-
A burn
If the pulse width is less than or equal to the thermal relaxation time it results in? -
Correct Ans-Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) - Correct Ans-
Longer
Smaller structures have _______ thermal relaxation times (TRT) - Correct Ans-Shorter
2|Page
, Electrolysis
What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - Correct Ans-Long
Longer pulse widths are for what skin type? - Correct Ans-4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? -
Correct Ans-Short
Shorter pulse widths are for what skin type? - Correct Ans-1-3
What percentage of follicles are damaged with each laser treatment? - Correct Ans-15%
What is a long-term stable reduction of the growing hairs after a treatment regime? -
Correct Ans-Laser Hair Removal (LHR)
What does the FDA call laser hair removal? - Correct Ans-Permanent hair reduction
What is the highest setting the skin can tolerate without damage called? - Correct Ans-
Fluence Threshold
What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - Correct Ans-Patient Threshold
The amount of hair per one square centimeter is known as? - Correct Ans-Hair density
The higher the hair density, the _______ the fluence? - Correct Ans-Lower
What percentage of overlapping do you want when doing LHR? - Correct Ans-30%
Darker/tanned skin requires what kind of fluence? - Correct Ans-Lower
What should you never use to clean a patient's skin prior to LHR? - Correct Ans-Alcohol
Pulse duration is measured in what unit? - Correct Ans-milliseconds (ms)
Spot size is measured in what unit? - Correct Ans-millimeters (mm)
Repetition rate is measured in what unit? - Correct Ans-hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - Correct Ans-Rox Anderson
The formula for fluence is? - Correct Ans-Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? - Correct Ans-
Selective photothermolysis
3|Page
