Question

19.
If change in energy
(AE) = 3 x 10-8 J, h=6.64 x 10^-34 J-s and
c = 3 x 10^8 m/s, then wavelength of the light is
(a) 6.36 x 10^3 Å
(b) 6.36 10^5À
(c) 6.64 x 10^-8 Å
(d) 6.36 x 10^18 Å​

Answer 1

Answer:

Shorcut formula to find wavelength

Hear no need of conversion.

E=12375/wavelength

wavelength=12375/E

=12375/3x10^-8 calculate it

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