A ruby laser emits
light at wave length
694nm energy
released
in a pulse in 150mj
How many photons
are in each pulse?
Answers
Answered by
1
Answer:
Total energy of pulse, E=n
λ
hc
⟹n=
hc
Eλ
=
6.626×10
−34
×3×10
8
0.39×662.6×10
−9
=1.3×10
18
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