Question

Calculate the frequency in hertz of
(a) the line at 694.3 nm produced by a ruby laser.

​

Answer 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