Consider Radium $R(a)$ nucleus moving along X-direction undergoes radioactive decay into Radon (Rn)

Question

Consider Radium $R(a)$ nucleus moving along X-direction undergoes radioactive decay into Radon (Rn) and and $\alpha$ - particle (He). If you observe the decay from frame of reference attached to the centre of mass, the radon (Rn) and Helium (He) move\

Professor PC Thomas Classes · Answer

C