WAEC - Physics (1990 - No. 56) | ExamPlay

WAEC - Physics (1990 - No. 56)

A radioactive substance has a half-life of 20 hours. What fraction of the original radioactive nuclei will remain after 80 hours?

1/32

1/16

1/8

1/4

1/2

설명

1 → 1/2 → 1/4 → 1/8 → 1/16

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