LASER Verified Multiple Choice and
Conceptual Actual Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. The term "LASER" is an acronym for: - ANSWER light amplification by
stimulated emission of radiation
2. Laser energy is measured in __________. - ANSWER joules, J
3. Energy = Power x time
How much energy does an 12 watt laser produce in 5 minutes? - ANSWER
12 W x 5 min x 60 sec = 3600 joules
4. __________ indicates the concentration of the laser light. It is measured in
watts per centimeter squared (W/cm2). For surgical lasers, this number is
greater than 1000.For therapy lasers, this number is less than 10. - ANSWER
Power Density
5. The recommended dosage for the treatment of superficial wounds is
________. - ANSWER 2-4 joules per square centimeter
, 6. A therapy laser delivers 2400 joules, which is applied to an area of 400
square centimeters. Calculate the energy density, in J/cm2. - ANSWER
2400 ÷ 400 = 6
7. If the power is kept constant, what is the relationship between spot size and
power density? - ANSWER Smaller spot size = higher power density
(Greater risk of burning.)
8. T or F- With Class IV lasers, the laser technician and the patient are the only
ones in the treatment area that must wear safety goggles. Everyone else in
the room does not need to wear eye protection. - ANSWER false
9. T or F- Protection is provided by proper protective eyewear against the
primary beam, so it is OK to look directly into the primary beam when you
are wearing protective goggles. - ANSWER false
10.T or F- Class 4 laser therapy does not cause significant deep heating, and
high doses of infrared laser have been shown to have no adverse effect on
open epiphyseal plates. Therefore, it is safe to use class 4 laser therapy on
young patients with open growth plates. - ANSWER true
11.T or F- When treating the neck, it is safe to treat to posterior, lateral, and
antero-lateral surfaces of the neck. But it is not recommended to treat
directly over the thyroid gland. - ANSWER true
12.T or F- Regarding laser therapy on patients with an active cancer:
Conceptual Actual Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. The term "LASER" is an acronym for: - ANSWER light amplification by
stimulated emission of radiation
2. Laser energy is measured in __________. - ANSWER joules, J
3. Energy = Power x time
How much energy does an 12 watt laser produce in 5 minutes? - ANSWER
12 W x 5 min x 60 sec = 3600 joules
4. __________ indicates the concentration of the laser light. It is measured in
watts per centimeter squared (W/cm2). For surgical lasers, this number is
greater than 1000.For therapy lasers, this number is less than 10. - ANSWER
Power Density
5. The recommended dosage for the treatment of superficial wounds is
________. - ANSWER 2-4 joules per square centimeter
, 6. A therapy laser delivers 2400 joules, which is applied to an area of 400
square centimeters. Calculate the energy density, in J/cm2. - ANSWER
2400 ÷ 400 = 6
7. If the power is kept constant, what is the relationship between spot size and
power density? - ANSWER Smaller spot size = higher power density
(Greater risk of burning.)
8. T or F- With Class IV lasers, the laser technician and the patient are the only
ones in the treatment area that must wear safety goggles. Everyone else in
the room does not need to wear eye protection. - ANSWER false
9. T or F- Protection is provided by proper protective eyewear against the
primary beam, so it is OK to look directly into the primary beam when you
are wearing protective goggles. - ANSWER false
10.T or F- Class 4 laser therapy does not cause significant deep heating, and
high doses of infrared laser have been shown to have no adverse effect on
open epiphyseal plates. Therefore, it is safe to use class 4 laser therapy on
young patients with open growth plates. - ANSWER true
11.T or F- When treating the neck, it is safe to treat to posterior, lateral, and
antero-lateral surfaces of the neck. But it is not recommended to treat
directly over the thyroid gland. - ANSWER true
12.T or F- Regarding laser therapy on patients with an active cancer:
