The efficiency of classroom-demonstration lasers is typically
A)about one percent.
B)about ten percent.
C)about twenty percent.
D)more than twenty percent.

Question

Quizplus · Accepted Answer

The efficiency of classroom-demonstration lasers is typically about one percent. This is because these types of lasers, often semiconductor diode lasers, are not designed for high efficiency but for safety, ease of use, and cost-effectiveness in an educational setting.

The Efficiency of Classroom-Demonstration Lasers Is Typically