In this post, some conceptual and numerical questions are asked to make your concept clear about the LASER. MCQ LASER PArt-2   Q 1      The output of the He-Ne laser lies in a.)   IR spectrum b.) visible spectrum c.) UV spectrum d.) X-ray spectrum   Q2        The first step to getting output from a laser ...

MCQ ON LASER Q1. The emission process responsible for producing laser is a)Spontaneous emission b) stimulation emission   c.) ultraviolet emission  d.) infrared emission   Q2. For laser action to occur, the medium must have at least a.) Four energy levels b.) two energy levels c.) three energy levels d.) none of above   Q3. Ordinary ...