ELECTROLYSIS IBEC+LASER STATE BOARD PRACTICE
TEST 2025/26 QUESTIONS WITH COMPLETE
SOLUTIONS!!
SECTION 1: LASER FUNDAMENTALS & PHYSICS
Q1: What does LASER stand for?
A) Light Absorption by Stimulated Energy Reaction
B) Light Amplification by Stimulated Emission of Radiation
C) Laser Amplification by Synchronized Emission of Radiation
D) Light Amplification by Synchronized Energy Response
Answer: B
Rationale: LASER is an acronym for Light Amplification by Stimulated Emission of
Radiation. The key principle is "stimulated emission," where photons are emitted
when atoms are excited and return to a lower energy state .
Q2: What is the distance measured in nanometers between two peaks or two
troughs known as?
A) Fluence
B) Wavelength
C) Amplitude
D) Frequency
Answer: B
Rationale: Wavelength is the distance between two successive peaks or troughs of
a wave, measured in nanometers (nm). It determines the color and energy of the
light .
,Q3: Light of only one color and one specific wavelength is known as:
A) Coherent light
B) Monochromatic light
C) Collimated light
D) Polychromatic light
Answer: B
Rationale: Monochromatic light consists of a single wavelength and color. Laser
light is monochromatic, unlike ordinary light which contains multiple
wavelengths .
Q4: Refraction is also known as:
A) Reflection
B) Transmission
C) Absorption
D) Scattering
Answer: B
Rationale: Refraction, or transmission, occurs when light passes through a
medium and changes direction due to a change in speed .
Q5: Who theorized stimulated emission?
A) Isaac Newton
B) Albert Einstein
C) Theodor Maiman
D) Niels Bohr
Answer: B
Rationale: Albert Einstein theorized stimulated emission in 1917, laying the
foundation for the development of the laser .
,Q6: What is the Alexandrite laser's wavelength in the visible light spectrum?
A) 694 nm
B) 755 nm
C) 810 nm
D) 1064 nm
Answer: B
Rationale: The Alexandrite laser operates at 755 nm, which is in the visible red
light spectrum. It is effective for hair removal on Fitzpatrick skin types I-IV .
Q7: What is the wavelength of the Nd:YAG laser?
A) 755 nm
B) 800 nm
C) 810 nm
D) 1064 nm
Answer: D
Rationale: The Nd:YAG laser operates at 1064 nm in the invisible infrared
spectrum. The longer wavelength penetrates deeper and is safe for all skin types,
including darker skin .
Q8: What type of wave is used in laser hair removal?
A) Continuous wave
B) Pulsed wave
C) Modulated wave
D) Standing wave
Answer: B
, Rationale: Pulsed waves are used in laser hair removal to deliver energy in short
bursts, allowing for selective heating of the target while allowing the skin to cool
between pulses .
Q9: A chromophore is also known as:
A) Target
B) Medium
C) Substrate
D) Catalyst
Answer: A
Rationale: A chromophore is the target structure that absorbs the laser energy. In
laser hair removal, melanin in the hair follicle is the primary chromophore .
Q10: Goggles worn by the patient and practitioner must be approved by which
organization?
A) FDA
B) OSHA
C) ANSI
D) CDC
Answer: C
Rationale: Laser safety eyewear must be approved by ANSI (American National
Standard Institute) for Class 3B and Class 4 lasers .
Q11: What are the parameters used in laser hair removal?
A) Wavelength, Spot Size, Fluence, Pulse Width
B) Wattage, Voltage, Resistance, Current
TEST 2025/26 QUESTIONS WITH COMPLETE
SOLUTIONS!!
SECTION 1: LASER FUNDAMENTALS & PHYSICS
Q1: What does LASER stand for?
A) Light Absorption by Stimulated Energy Reaction
B) Light Amplification by Stimulated Emission of Radiation
C) Laser Amplification by Synchronized Emission of Radiation
D) Light Amplification by Synchronized Energy Response
Answer: B
Rationale: LASER is an acronym for Light Amplification by Stimulated Emission of
Radiation. The key principle is "stimulated emission," where photons are emitted
when atoms are excited and return to a lower energy state .
Q2: What is the distance measured in nanometers between two peaks or two
troughs known as?
A) Fluence
B) Wavelength
C) Amplitude
D) Frequency
Answer: B
Rationale: Wavelength is the distance between two successive peaks or troughs of
a wave, measured in nanometers (nm). It determines the color and energy of the
light .
,Q3: Light of only one color and one specific wavelength is known as:
A) Coherent light
B) Monochromatic light
C) Collimated light
D) Polychromatic light
Answer: B
Rationale: Monochromatic light consists of a single wavelength and color. Laser
light is monochromatic, unlike ordinary light which contains multiple
wavelengths .
Q4: Refraction is also known as:
A) Reflection
B) Transmission
C) Absorption
D) Scattering
Answer: B
Rationale: Refraction, or transmission, occurs when light passes through a
medium and changes direction due to a change in speed .
Q5: Who theorized stimulated emission?
A) Isaac Newton
B) Albert Einstein
C) Theodor Maiman
D) Niels Bohr
Answer: B
Rationale: Albert Einstein theorized stimulated emission in 1917, laying the
foundation for the development of the laser .
,Q6: What is the Alexandrite laser's wavelength in the visible light spectrum?
A) 694 nm
B) 755 nm
C) 810 nm
D) 1064 nm
Answer: B
Rationale: The Alexandrite laser operates at 755 nm, which is in the visible red
light spectrum. It is effective for hair removal on Fitzpatrick skin types I-IV .
Q7: What is the wavelength of the Nd:YAG laser?
A) 755 nm
B) 800 nm
C) 810 nm
D) 1064 nm
Answer: D
Rationale: The Nd:YAG laser operates at 1064 nm in the invisible infrared
spectrum. The longer wavelength penetrates deeper and is safe for all skin types,
including darker skin .
Q8: What type of wave is used in laser hair removal?
A) Continuous wave
B) Pulsed wave
C) Modulated wave
D) Standing wave
Answer: B
, Rationale: Pulsed waves are used in laser hair removal to deliver energy in short
bursts, allowing for selective heating of the target while allowing the skin to cool
between pulses .
Q9: A chromophore is also known as:
A) Target
B) Medium
C) Substrate
D) Catalyst
Answer: A
Rationale: A chromophore is the target structure that absorbs the laser energy. In
laser hair removal, melanin in the hair follicle is the primary chromophore .
Q10: Goggles worn by the patient and practitioner must be approved by which
organization?
A) FDA
B) OSHA
C) ANSI
D) CDC
Answer: C
Rationale: Laser safety eyewear must be approved by ANSI (American National
Standard Institute) for Class 3B and Class 4 lasers .
Q11: What are the parameters used in laser hair removal?
A) Wavelength, Spot Size, Fluence, Pulse Width
B) Wattage, Voltage, Resistance, Current
