A helium nucleus (charge and mass ) and a lithium nucleus (charge and mass ) are…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

144. A helium nucleus (charge

+2 q

and mass

4 m

) and a lithium nucleus (charge

+3 q

and mass

7 m

) are accelerated through the same electric potential difference,

V_{0}

. What is the ratio of their resultant kinetic energies,

\frac{K_{\text {lithium }}}{K_{\text {Helium }}}

? (A)

2 / 3

(B)

6 / 7

(C)

7 / 6

(D)

3 / 2