1.

Calculate the de-Broglie wavelength of an electron which has been accelerated from rest on application of potential of 400volts.$

A. 0.1653 √Ö
B. 0.5125 √Ö
C. 0.6135 √Ö
D. 0.2514 √Ö
Answer» D. 0.2514 ‚Äö√†√∂‚àö√±


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