The half-life of a radioactive sample is 20 days this means that

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The half-life of a radioactive sample is 20 days this means that

PhysicsNuclear PhysicsAP EAMCETAP EAMCET 2020 (07 Oct Special)

Options:

A the substance completely disintegrates in 40 days
B the substance completely disintegrates in 80 days
C $1 / 8$ part of the substance disintegrates in 60 days
D $7 / 8$ part of the substance disintegrates in 60 days

Solution:

2343 Upvotes Verified Answer

The correct answer is: $7 / 8$ part of the substance disintegrates in 60 days

No solution. Refer to answer key.

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