Laser and Light - Based Hair Removal Physics Exam ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
with verified detailed solutions ||\\//|| ||\\//|| ||\\//||
1. All of the following are characteristics of LASER light except:
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a. Monochromatic
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b. Polychromatic
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c. Collimated
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d. Coherent - correct answer✔✔B. Polychromatic
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2. What type of melanin is responsible for brown/black pigment?
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a. Pheomelanin
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b. Melomelanin
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c. Tyromelanin
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d. Eumelanin - correct answer✔✔d. Eumelanin
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3. Using laser energy to selectively destroy a target beneath the surface of the skin is called:
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a. Photo-thermolysis
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b. Pulse duration
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c. Thermal relaxation
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d. Dermal scatter - correct answer✔✔a. Photo-thermolysis
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4. Which spot size offers the deepest penetration?
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a. 5 mm
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b. 7 mm
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c. 12 mm
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, d. 18 mm - correct answer✔✔d. 18 mm
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5. Which of the following is the chromophore for Laser Hair Removal?
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a. Oxyhemoglobin
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b. Water ||\\//||
c. Deoxyribonucleic Acid
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d. Melanin - correct answer✔✔D. Melanin
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6. An electron will release one or more photons when it is in which stage?
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a. Singlet ||\\//||
b. Stable ||\\//||
c. Metastable
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d. Excited - correct answer✔✔c. Metastable
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7. Radiation that causes changes in DNA, which can lead to cell mutation or cellular death, is
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called:
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a. Non-ionizing radiation
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b. Ionizing radiation
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c. Laser ||\\//||
d. Diathermy - correct answer✔✔b. Ionizing radiation
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8. Coherent light is:
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a. All the light waves are traveling in the same direction
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b. All the light waves are in unison with each other
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c. A characteristic of laser light
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d. All of the above - correct answer✔✔d. All of the above
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with verified detailed solutions ||\\//|| ||\\//|| ||\\//||
1. All of the following are characteristics of LASER light except:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. Monochromatic
||\\//||
b. Polychromatic
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c. Collimated
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d. Coherent - correct answer✔✔B. Polychromatic
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2. What type of melanin is responsible for brown/black pigment?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. Pheomelanin
||\\//||
b. Melomelanin
||\\//||
c. Tyromelanin
||\\//||
d. Eumelanin - correct answer✔✔d. Eumelanin
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
3. Using laser energy to selectively destroy a target beneath the surface of the skin is called:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. Photo-thermolysis
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b. Pulse duration
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c. Thermal relaxation
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d. Dermal scatter - correct answer✔✔a. Photo-thermolysis
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4. Which spot size offers the deepest penetration?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. 5 mm
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b. 7 mm
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c. 12 mm
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, d. 18 mm - correct answer✔✔d. 18 mm
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5. Which of the following is the chromophore for Laser Hair Removal?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. Oxyhemoglobin
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b. Water ||\\//||
c. Deoxyribonucleic Acid
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d. Melanin - correct answer✔✔D. Melanin
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6. An electron will release one or more photons when it is in which stage?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. Singlet ||\\//||
b. Stable ||\\//||
c. Metastable
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d. Excited - correct answer✔✔c. Metastable
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7. Radiation that causes changes in DNA, which can lead to cell mutation or cellular death, is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
called:
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a. Non-ionizing radiation
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b. Ionizing radiation
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c. Laser ||\\//||
d. Diathermy - correct answer✔✔b. Ionizing radiation
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8. Coherent light is:
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a. All the light waves are traveling in the same direction
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b. All the light waves are in unison with each other
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c. A characteristic of laser light
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d. All of the above - correct answer✔✔d. All of the above
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