Laser and Light Based Hair Removal Physics Exam Questions & Answers 100% SOLVED

1. All of the following are characteristics of LASER light except: a. Monochromatic b. Polychromatic c. Collimated d. Coherent - ANSWER_B. Polychromatic 2. What type of melanin is responsible for brown/black pigment? a. Pheomelanin b. Melomelanin c. Tyromelanin d. Eumelanin - ANSWER_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 - ANSWER_a. Photo-thermolysis 4. Which spot size offers the deepest penetration? a. 5 mm b. 7 mm c. 12 mm d. 18 mm - ANSWER_d. 18 mm 5. Which of the following is the chromophore for Laser Hair Removal? a. Oxyhemoglobin b. Water c. Deoxyribonucleic Acid d. Melanin - ANSWER_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 - ANSWER_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 - ANSWER_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 - ANSWER_d. All of the above