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A photon has momentum of magnitude 8.24x...

A photon has momentum of magnitude `8.24xx10^(-28) kg-m//s`. (a) What is the energy of this photon? Given your answer in joules and in electron volts
(b) What is the wavelength of this photon? In what region of the electormagnetic spectrum does lie?

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The correct Answer is:
A, B, D
(a) `P = (E ) /(c ) rArr E = pc`
(b) `lambda = (12375)/(E (in eV)`
`=(12375)/(1.54) = 8035 Å`
`~~804 nm`
So, this wavelength lies in ultraviolet region.
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