Q.

α-decay of a parent nucleus X results in a daughter nucleus Y. If mx,myand mα are the masses of the parent nucleus, the daughter nucleus and the α - particle respectively, then the net kinetic energy gained in the process is

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a

(mx+my+mα)c2

b

(mxmymα)c2

c

(mx+mymα)c2

d

(mx+mαmy)c2

answer is B.

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