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Question

- ln(2)λ(R1R2)
- R1e−λt2−R2e−λt2
- (R1−R2λ)
- λ(R1−R2)

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Solution

Verified by Toppr

Let N1 be the number of atoms at t1

∴R1=λN1

Let N2 be the number of atoms at t2

∴R2=λN2

⇒R1−R2=λN1−λN2

⇒N1−N2=R1−R2λ

∴ number of atoms decayed between the time interval t1 and t2 are R1−R2λ

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