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What is the energy of a photon whose wav...

What is the energy of a photon whose wavelength is 6840 `Å` ?

A

1.81 eV

B

3.6 eV

C

`-13.6 eV`

D

12.1 eV

Text Solution

Verified by Experts

The correct Answer is:
A
`E = h upsilon = (hc)/(lambda) = (12400 eV Å)/(8840 Å) = 1.81 eV`
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