1.

The de-Broglie wavelength of an electron having \[80eV\] of energy is nearly (1eV = 1.6 ´ 10?19 J,  Mass of electron = 9 ´ 10?31kg Plank?s constant = 6.6 ´ 10?34 J-sec) [EAMCET (Engg.) 2001]

A.            140 Å                                       
B.            0.14 Å
C.            14 Å                                         
D.            1.4 Å
Answer» E.


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