The number of photons emitted by a 5mW laser source operating at 632.8 nm is...

SadoHearcepar2BH

SadoHearcepar2BH

Answered

2022-11-26

The number of photons emitted by a 5mW laser source operating at 632.8 nm is ? × 10 16

Answer & Explanation

revessatrP6

revessatrP6

Expert

2022-11-27Added 11 answers

Every photon's energy is
= E h c λ
= ( 6.63 × 10 34 J s ) × ( 3 × 10 8 m s 1 ) ( 632.8 × 10 9 m )
= 3.14 × 10 19 J
The laser's energy output per second is 5 × 10 3 J
Consequently, the rate of photon emission per second
= 5 × 10 3 J 3.14 × 10 19 J = 1.6 × 10 16 .

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get your answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?