Jee Main
Atoms And Nuclei
JEE Main 2026 (Online) 8th April Evening Shift
MCQ+4 / -12026
Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows spontaneous $\alpha$-decay with same $Q$ value of 1 MeV . The ratio of energies of $\alpha$-rays produced by A and B is $\_\_\_\_$ .