The counting rate observed from a radioactive source at t=0 second was – McqOptions

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1.	The counting rate observed from a radioactive source at t=0 second was 1600 counts per second and at t=8 seconds it was 100 counts per second. The counting rate observed, as counts per second at t=6 seconds, will be [MP PET 1996; UPSEAT 2000; Pb. PET 2004; Kerala PET 2005]
A.	400
B.	300
C.	200
D.	150
Answer» D. 150

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