Question

How many photons per second are emitted by a 7.50 2 laser that has a wavelength of
10.6?

Answer 1

Explanation:

Step-by-step explanation:

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Answer 2

Explanation:

The energy of a photon is E=

λ

hc

=

632.8×10

−9

(6.62×10

−34

)(3×10

8

)

=3.14×10

−19

J

Given, the energy emitted per second by laser =5mW=5×10

−3

J

Thus the number of photons emitted per second =

3.14×10

−19

5×10

−3

=1.6×10

16