1.

The kinetic energy of an electron with de-Broglie wavelength of 0.3 nanometer is                            [UPSEAT 2004]

A.            0.168 eV                                 
B.            16.8 eV
C.            1.68 eV                                   
D.            2.5 eV
Answer» C.            1.68 eV                                   


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