NEET Physics Nuclei Questions Solved

PMT - 1997
After two hours, one- sixteenth of the starting amount of a certain radioactive isotope remained undecayed. The half life of the isotope is Bihar MEE 1995; Manipal MEE 1995; MP PMT 1997; AFMC 2000, 05; DPMT 2002] (a) 15 minutes (c) 45 minutes (b) 30 minutes (d) 1 hour

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