{"id":22944,"date":"2024-04-15T06:27:08","date_gmt":"2024-04-15T06:27:08","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=22944"},"modified":"2024-04-15T06:27:08","modified_gmt":"2024-04-15T06:27:08","slug":"in-a-laser-say-neon-laser-all-the-atoms-emit-the-light-waves-of-a-same-frequency-b-same-amplitude-c-same-phase-d-all-of-the-above","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-a-laser-say-neon-laser-all-the-atoms-emit-the-light-waves-of-a-same-frequency-b-same-amplitude-c-same-phase-d-all-of-the-above\/","title":{"rendered":"In a Laser (say neon laser) all the atoms emit the light waves of A. Same frequency B. Same amplitude C. Same phase D. All of the above"},"content":{"rendered":"

[amp_mcq option1=”Same frequency” option2=”Same amplitude” option3=”Same phase” option4=”All of the above” correct=”option4″]<\/p>\n

The correct answer is: D. All of the above<\/strong><\/p>\n

In a laser, all the atoms emit light waves of the same frequency, amplitude, and phase. This is because the atoms are stimulated to emit light by a process called stimulated emission. Stimulated emission occurs when an atom is in an excited state and it absorbs a photon of light with the same frequency as the light that the atom will emit when it decays to a lower energy state. The absorbed photon causes the atom to decay to a lower energy state, and in doing so, it emits a photon with the same frequency, amplitude, and phase as the absorbed photon.<\/p>\n

This process of stimulated emission is what allows lasers to produce light with a very narrow bandwidth, or range of frequencies. The light from a laser is also very coherent, which means that the waves of light are all in phase with each other. This makes laser light very intense and useful for a variety of applications, such as surgery, telecommunications, and manufacturing.<\/p>\n

Here is a brief explanation of each option:<\/p>\n