How much energy does a photon of blue light with a wavelength of 465 nm have?...

Question

Question

How much energy does a photon of blue light with a wavelength of 465 nm have?

How much energy does a photon of red light with a wavelength of 663 nm have?
Photons of which color of light (red or blue) have greater energy?

red or blue

science chemistry

Answer 1

Answer #1

= 465nm = 465*10^-9 m

C = 3*10^8m/s

E = hc/

= 6.625*10^-34*3*10^8/465*10^-9

= 4.274*10^-19 J of blue light

= 663nm = 663*10^-9 m

C = 3*10^8m/s

E = hc/

= 6.625*10^-34*3*10^8/663*10^-9

= 3*10^-19 J of red light

blue light has greater energy than red light

blue >>>>answer

Answer 2

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