Two radioactive nuclei P and Q in a given sampleinto a stable nucleus R. At time t = 0 number of P species are 4No and that of Q are No:Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there areno nuclei of R present in the sample. When numberof nuclei of P and Qare equal the number of nucleiof R present in the sample would be2.AIPMT (Mains)-2011\rbrack (1) 5No/2 (2) 2No/2.(3) 3N (4)9N20

Two radioactive nuclei P and Q in a given sampleinto a stable nucleus

1.	Two radioactive nuclei P and Q in a given sampleinto a stable nucleus R. At time t = 0 number of P species are 4No and that of Q are No:Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there areno nuclei of R present in the sample. When numberof nuclei of P and Qare equal the number of nucleiof R present in the sample would be2.AIPMT (Mains)-2011\rbrack (1) 5No/2 (2) 2No/2.(3) 3N (4)9N20
Answer» Two radioactive nuclei P and Q in a given sampleinto a stable nucleus R. At time t = 0 number of P species are 4No and that of Q are No:Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there areno nuclei of R present in the sample. When numberof nuclei of P and Qare equal the number of nucleiof R present in the sample would be2.AIPMT (Mains)-2011\rbrack (1) 5No/2 (2) 2No/2.(3) 3N (4)9N20