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Calculate energy of photon having 6840 Å...

Calculate energy of photon having 6840 Å wavelength (hc=12400 eVÅ)

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
`lambda=6840 Å`
`therefore f=(c )/(lambda) f=( c)/(lambda)implieshf=(hc)/(lambda),hc=12400 eVÅ`
Energy of photon =`(12400 eVÅ)/(6840Å)=1.81 eV`
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