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Energy of an emitted photon with wavelen...

Energy of an emitted photon with wavelength `620 nm` is :

A

`1 eV`

B

`2 eV`

C

`1.5 eV`

D

`2.5 eV`

Text Solution

Verified by Experts

The correct Answer is:
B
Energy of asn emitted photon ………
`E_(ev)=(1240 eV-nm)/(lambda_(nm))`
or `E_(ev) = (1240)/(620) = 2eV`
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