Doubly ionised helium atoms and hydrogen ions are accelerated from rest through the same potential drop. The ratio of the final velocities of the helium and the hydrogen ion is(a) 1/2(b) 2(c)1/sqrt2(d) sqrt2
Amit Saxena , 11 Years ago
Grade upto college level
1 Answers
Amit Saxena
Last Activity: 11 Years ago
(d)
mv2 = eV, or, V = (2eV/m)1/2
the mass of helium ion is four times that of hydrogen ion.
Further, the charge on helium ion is twice that of hydrogen ion.
vHe/vH = sqrt 2
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