1.

Two radioactive substances X and Y emit \[\alpha \] and \[\beta \] particles respectively. Their disintegration constants are in the ratio 2 : 3. To have equal probabilities of getting emission of \[\alpha \] and \[\beta \] particles, the ratio of number of atoms X to that of Fat any time instant is

A. 2 : 3
B. 3 : 2
C. e : 1
D. (e-1) : 1
Answer» C. e : 1


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