Question on: WAEC Physics - 1994
In 24 days a radioactive isotope decreases in mass from 64g to 2g. What is the half life of the radioactive material
A
0.75 days
B
2.58 days
C
4 days
D
4.80 days
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Correct Option: D
64g → 32g → 16g → 8g → 4g → 2g
Half life time= 24/5 = 4.8 days
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