1.

What is the de-Broglie wavelength of the \[\alpha -\]particle accelerated through a potential difference V           [RPMT 1996]

A.            \[\frac{0.287}{\sqrt{V}}\]Å    
B.            \[\frac{12.27}{\sqrt{V}}\]Å
C.            \[\frac{0.101}{\sqrt{V}}\]Å    
D.            \[\frac{0.202}{\sqrt{V}}\]Å
Answer» D.            \[\frac{0.202}{\sqrt{V}}\]Å


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