1.

The energy of a photon of light with wavelength 5000 Å is approximately 2.5 eV. This way the energy of an X-ray photon with wavelength 1Å would be              [MP PET 1997]

A.            2.5/5000 eV                          
B.            \[2.5/{{(5000)}^{2}}eV\]
C.            \[2.5\times 5000\ eV\]    
D.            \[2.5\times {{(5000)}^{2}}eV\]
Answer» D.            \[2.5\times {{(5000)}^{2}}eV\]


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