Using a nuclear counter, the count rate of emitted particles from a ra – McqOptions

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1.	Using a nuclear counter, the count rate of emitted particles from a radioactive source is measured. At t = 0, it was 1600 counts per second and t = 8 s, it was 100 counts per second. The count rate observed as counts per second at t = 6s is close to
A.	400
B.	200
C.	150
D.	360
Answer» C. 150

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