Answered

Get expert insights and community support for your questions on IDNLearn.com. Join our Q&A platform to receive prompt and accurate responses from knowledgeable professionals in various fields.

A certain laser outputs pure red light (photon energy 1.8 eV) with power 550 milliwatts (0.55 watts). How many photons per second does this laser emit

Sagot :

Facundo3141592idn

We want to find how many photons per second a laser emits given that we know the energy of a single photon and the power of the laser, we will get:

1.90712*10^18 photons per second.

So we know that the photon energy is 1.8 eV, and the laser power is:

P = 0.55 watts

Remember that:

1 watt = 1 J/s

And:

1 eV = 1.60218*10^(-19) J

Then we can convert the two values that we have so we have both in joules:

Power = P = 0.55 J/s

Energy = 1.8 eV = 1.8*(1.60218*10^(-19) J) = 2.883924*10^(-19) J

The number of photons emitted per second is just the quotient between the power and the energy of a single photon, we have:

Number = (0.55 J/s)/(2.883924*10^(-19) J) = 1.90712*10^18 photons per second.

If you want to learn more, you can read:

https://brainly.com/question/20343793

Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. Your search for answers ends at IDNLearn.com. Thanks for visiting, and we look forward to helping you again soon.