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JEE Main202120 Jul 2021Evening ShiftPhysicsNuclear PhysicsActual

A radioactive substance decays to 1 16 th of its initial activity in 80 days. The half life of the radioactive substance expressed in days is ________.

Correct answer

0

Step-by-step solution

N 0 ⟶ t 1 2 N 0 2 ⟶ t 1 2 N 0 4 ⟶ t 1 2 N 0 8 ⟶ t 1 2 N 0 16 4 × t 1 2 = 80 t 1 2 = 20 days

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