Question

which one has a higher energy a photon of violet light with wavelength 4000A or a proton of red light with an wavelength 7000A

Answer 1

The one photon having larger wavelength will have less energy because E= h/wavelength.

Thus violet light photon will have more energy.

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Answer 2

Answer:

The photon With 4000 Angstorm.

Explanation:

h=6.62 x 10^-34 JS, c=3 x 10^8 m/s^-1

For a Pfoton with Violet Light.

Lambda= 4000 x 10^-10 m or 4 x 10^-7 m

E=6.62 x 10^-34 x (3x10^-8)/(4x10^-7)= 4.96 x 10^-19 Js.

For a Photon of Red Light,

Lambda=7000 x 10^-10 m  or 7 x 10^-7 m

E= 6.62 x 10^-34 x (3x10^-8)/(7x10^-7)= 2.83 x 10^-19 Js.

Violet Light Photon energy is Higher than Raed Light Photon Energy.