ELECTROLYSIS (IBEC) AND LASER
STATE BOARD COMPREHENSIVE
EXAM QUESTIONS AND CORRECT
ANSWERS.
1. During Galvanic electrolysis, what chemical is produced at the negative electrode
(cathode)?
A. Sodium hydroxide (Lye)
B. Hydrochloric acid
C. Oxygen gas
D. Chlorine gas
Answer: A
Conceptual Explanation: Galvanic electrolysis uses direct current to trigger a chemical
reaction. At the negative electrode (cathode), water and salt in the tissue react to produce
sodium hydroxide (lye), which decomposes the follicle.
2. Which layer of the hair follicle is responsible for the formation of the hair shaft?
A. Henle’s layer
B. The matrix
C. Huxley’s layer
,D. The cuticle
Answer: B
Conceptual Explanation: The matrix is the mitotically active part of the hair bulb where
cell division occurs to form the hair shaft and the inner root sheath.
3. In Laser hair removal, what does the term ‘Thermal Relaxation Time’ (TRT) refer to?
A. The time required for a target to dissipate 50 percent of its heat to surrounding tissue
B. The time it takes for the laser to reach maximum power
C. The duration of the laser pulse itself
D. The recovery time between laser treatments
Answer: A
Conceptual Explanation: TRT is the time needed for the target (chromophore) to lose half
of its heat. To avoid damaging surrounding tissue, the pulse duration should generally be
shorter than or equal to the TRT of the target.
4. What is the wavelength of a standard Alexandrite laser?
A. 1064 nm
B. 810 nm
C. 755 nm
D. 694 nm
, Answer: C
Conceptual Explanation: The Alexandrite laser operates at 755 nm, which is highly
absorbed by melanin, making it effective for light to medium skin types.
5. Which law of electricity states that Current = Voltage / Resistance?
A. Faraday’s Law
B. Joule’s Law
C. Ohm’s Law
D. Grotthuss-Draper Law
Answer: C
Conceptual Explanation: Ohm’s Law defines the relationship between current, voltage,
and resistance (I=V/R).
6. In Thermolysis, the ‘point effect’ refers to the concentration of high-frequency energy at:
A. The tip of the probe
B. The middle of the probe
C. The surface of the skin
D. The connection to the machine
Answer: A
STATE BOARD COMPREHENSIVE
EXAM QUESTIONS AND CORRECT
ANSWERS.
1. During Galvanic electrolysis, what chemical is produced at the negative electrode
(cathode)?
A. Sodium hydroxide (Lye)
B. Hydrochloric acid
C. Oxygen gas
D. Chlorine gas
Answer: A
Conceptual Explanation: Galvanic electrolysis uses direct current to trigger a chemical
reaction. At the negative electrode (cathode), water and salt in the tissue react to produce
sodium hydroxide (lye), which decomposes the follicle.
2. Which layer of the hair follicle is responsible for the formation of the hair shaft?
A. Henle’s layer
B. The matrix
C. Huxley’s layer
,D. The cuticle
Answer: B
Conceptual Explanation: The matrix is the mitotically active part of the hair bulb where
cell division occurs to form the hair shaft and the inner root sheath.
3. In Laser hair removal, what does the term ‘Thermal Relaxation Time’ (TRT) refer to?
A. The time required for a target to dissipate 50 percent of its heat to surrounding tissue
B. The time it takes for the laser to reach maximum power
C. The duration of the laser pulse itself
D. The recovery time between laser treatments
Answer: A
Conceptual Explanation: TRT is the time needed for the target (chromophore) to lose half
of its heat. To avoid damaging surrounding tissue, the pulse duration should generally be
shorter than or equal to the TRT of the target.
4. What is the wavelength of a standard Alexandrite laser?
A. 1064 nm
B. 810 nm
C. 755 nm
D. 694 nm
, Answer: C
Conceptual Explanation: The Alexandrite laser operates at 755 nm, which is highly
absorbed by melanin, making it effective for light to medium skin types.
5. Which law of electricity states that Current = Voltage / Resistance?
A. Faraday’s Law
B. Joule’s Law
C. Ohm’s Law
D. Grotthuss-Draper Law
Answer: C
Conceptual Explanation: Ohm’s Law defines the relationship between current, voltage,
and resistance (I=V/R).
6. In Thermolysis, the ‘point effect’ refers to the concentration of high-frequency energy at:
A. The tip of the probe
B. The middle of the probe
C. The surface of the skin
D. The connection to the machine
Answer: A
