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PhysicsModern PhysicsRadioactivityEasy2 minPYQ_2006

PhysicsEasysingle choice

Half-life of a radio active substance ' $A$ ' is 4 days. The probability that a nucleus will decay in two half-lives is

Options:

Answer:

Solution:

After two half lives $\frac{1}{4}$ th fraction of nuclei will remain undecayed. Or, $\frac{3}{4}$ th fraction will decay. Hence, the probability that a nucleus decays in two half lives is $\frac{3}{4}$ .

Stream:JEE_ADVSubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: PYQ_2006

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