©SIRJOEL EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Laser and Light Based Hair Removal Physics
Exam Questions And Answers
1. All of the following are characteristics of LASER light except:
a. Monochromatic
b. Polychromatic
c. Collimated
d. Coherent - Answers✔B. Polychromatic
2. What type of melanin is responsible for brown/black pigment?
a. Pheomelanin
b. Melomelanin
c. Tyromelanin
d. Eumelanin - Answers✔d. Eumelanin
3. Using laser energy to selectively destroy a target beneath the surface of the skin is called:
a. Photo-thermolysis
b. Pulse duration
c. Thermal relaxation
d. Dermal scatter - Answers✔a. Photo-thermolysis
4. Which spot size offers the deepest penetration?
a. 5 mm
b. 7 mm
c. 12 mm
1|Page
, ©SIRJOEL EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
d. 18 mm - Answers✔d. 18 mm
5. Which of the following is the chromophore for Laser Hair Removal?
a. Oxyhemoglobin
b. Water
c. Deoxyribonucleic Acid
d. Melanin - Answers✔D. Melanin
6. An electron will release one or more photons when it is in which stage?
a. Singlet
b. Stable
c. Metastable
d. Excited - Answers✔c. Metastable
7. Radiation that causes changes in DNA, which can lead to cell mutation or cellular death, is
called:
a. Non-ionizing radiation
b. Ionizing radiation
c. Laser
d. Diathermy - Answers✔b. Ionizing radiation
8. Coherent light is:
a. All the light waves are traveling in the same direction
b. All the light waves are in unison with each other
c. A characteristic of laser light
d. All of the above - Answers✔d. All of the above
9. The Nd:Yag has a wavelength of.
a. 755 pm
b. 694 nm
c. 1064 nm
d. 800 pm - Answers✔c. 1064 nm
10. The distance between two peaks in a wave is called:
2|Page
ALL RIGHTS RESERVED.
Laser and Light Based Hair Removal Physics
Exam Questions And Answers
1. All of the following are characteristics of LASER light except:
a. Monochromatic
b. Polychromatic
c. Collimated
d. Coherent - Answers✔B. Polychromatic
2. What type of melanin is responsible for brown/black pigment?
a. Pheomelanin
b. Melomelanin
c. Tyromelanin
d. Eumelanin - Answers✔d. Eumelanin
3. Using laser energy to selectively destroy a target beneath the surface of the skin is called:
a. Photo-thermolysis
b. Pulse duration
c. Thermal relaxation
d. Dermal scatter - Answers✔a. Photo-thermolysis
4. Which spot size offers the deepest penetration?
a. 5 mm
b. 7 mm
c. 12 mm
1|Page
, ©SIRJOEL EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
d. 18 mm - Answers✔d. 18 mm
5. Which of the following is the chromophore for Laser Hair Removal?
a. Oxyhemoglobin
b. Water
c. Deoxyribonucleic Acid
d. Melanin - Answers✔D. Melanin
6. An electron will release one or more photons when it is in which stage?
a. Singlet
b. Stable
c. Metastable
d. Excited - Answers✔c. Metastable
7. Radiation that causes changes in DNA, which can lead to cell mutation or cellular death, is
called:
a. Non-ionizing radiation
b. Ionizing radiation
c. Laser
d. Diathermy - Answers✔b. Ionizing radiation
8. Coherent light is:
a. All the light waves are traveling in the same direction
b. All the light waves are in unison with each other
c. A characteristic of laser light
d. All of the above - Answers✔d. All of the above
9. The Nd:Yag has a wavelength of.
a. 755 pm
b. 694 nm
c. 1064 nm
d. 800 pm - Answers✔c. 1064 nm
10. The distance between two peaks in a wave is called:
2|Page
