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The wavelength (in Å) of a photon having...

The wavelength (in `Å`) of a photon having energy 3 eV is approximately.
`[1eV =1.6 xx 10 ^(-12) erg]`
`[h =6.626 xx 10 ^(-27) erg s ]`

A

3000

B

4000

C

4141

D

7824

Text Solution

Verified by Experts

The correct Answer is:
C
`3eV =3 xx 1.6 xx 10 ^(-12) erg ` = Energy (E)
`lamda = (hc)/(E) = (6.626 xx 10 ^(-27) xx 3xx 10 ^(8))/(3xx1.6 xx 10 ^(-12))=4141(Å)`
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