Answer:
1 : 10000
Explanation:
Energy of a photon of x-rays of wavelength = 0.05 nm
Energy of a photon of visible light of wavelength = 500 nm
The ratio is given as;
0.05 : 500
1 : 10000
Therefore, ratio of the energy of a photon of x-rays of wavelength to that of a photon of visible light of wavelength is 1 : 10000