Question
In a radioactive decay, a number of fragments are found. If parent nucleus is initially at rest then after decay centre of mass will :(a) move on a straight line(b) move in a circle(c) remain in rest(d) move in parabolic path
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This means that the initial momentum of the system is zero. Show more…
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In radioactive decay process, the negatively charged emitted $\beta$ -particles are (a) the electrons present inside the nucleus (b) the electrons produced as a result of the decay of neutrons inside the nucleus (c) the electrons produced as a result of collissions between atoms (d) the electrons orbiting around the nucleus
Consider a nucleus that undergoes $\alpha$ decay. (a) Is the radius of the resulting daughter nucleus greater than, less than, or equal to the radius of the original nucleus? (b) Choose the best explanation from among the following: I. The decay adds an alpha particle to the nucleus, causing its radius to increase. II. When the nucleus undergoes decay it ejects two neutrons and two protons. This decreases the number of nucleons in the nucleus, and therefore its radius will decrease. III. An $\alpha$ decay leaves the number of nucleons unchanged. As a result, the radius of the nucleus stays the same.
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