Question Set

1. After the first photons of light are produced, which process is responsible for amplification of the light?




Ask Your Doubts Here

Type in
(Press Ctrl+g to toggle between English and the chosen language)

Comments

  • By: guest on 02 Jun 2017 01.23 am
    The word "laser" is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.
Show Similar Question And Answers
QA->A photo sensitive material would emit electrons, if excited by photons beyond a threshold. To overcome the threshold, one would increase?....
QA->Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?....
QA->A man started to walk East. After moving a distance he turned to his right. After moving a distance he turned to his right again. After moving a little he turned in the end of his left. In which direction he going is now?....
QA->Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this : Diffusion, Refraction, Internal reflection?....
QA->When yellow light is incident on a surface no electrons are emitted while green light can emit. If the red light is incident on the surface then?....
MCQ->After the first photons of light are produced, which process is responsible for amplification of the light?....
MCQ->Once the active medium is excited, the first photons of light are produced by which physical process?....
MCQ->Consider the following statements in regard to aerobic and anaerobic treatment processes : 1. Biomass production in the aerobic treatment process is more as compared to the anaerobic treatment process. 2. Start-up period is more in the aerobic treatment process as compared to the anaerobic treatment process. 3. Energy consumption and production is more in the aerobic treatment process as compared to the anaerobic treatment process. Which of the statements given above is/are correct ?....
MCQ->Consider the following statements If ensemble and time averages of a random process are identical, the process is ergodic.If ensemble and time average of a random process are not identical, the process is ergodic.An ergodic process is stationary.A stationary process is necessarily ergodic. Which of the above statements are correct?....
MCQ->Pick out thể one word for - a secret arrangement....
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use | Powered By:Omega Web Solutions
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution