Question

What is the energy of a photon with a wavelength of 550 nm?

Answer 1

the energy pf photon will be 2.25 ev

Answer 2

E(energy)= hc/wavelength. ;
where h= plank constant and c=velocity of photon ( sun light )
h=$6.626 \times 10 {}^{ - 34}$
c=$3 \times 10 {}^{8}$ m/s
wavelength= 550 nm=$550 \times 10 {}^{ - 9} meter$

so..
$e = \frac{6.626 \times 10 {}^{ - 34} \times 3 \times 10 {}^{ 8} }{550 \times 10 {}^{ - 9} } \\ \: \: \: = 0.03614 \times 10 {}^{ - 17} \\ \: \: \: = 3.614 \times 10 {}^{ - 15}$
so.. energy= 3.614*10^-15 Joule
I think this is right....
if this right.....
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