Modern Physics> Radioactive Decay...

The decay constant for A----->B is λThe decay constant for B----->C is 2λAt t= 0 A is N0 At t= 0B is 0 At t= 0 C is 0At t= t A is N1 At t= t B is N2 At t= t C is N3The ratio of N1 to N2 when N2 is maximum ,isA) at no time this is possibleB) 2C) 1/2D) (Ln 2)/2Please give detailed solution.

Ankit Sharma , 12 Years ago

Grade 12th Pass

1 Answers

Arun Kumar

Last Activity: 10 Years ago

$\frac{\mathrm{d} A}{\mathrm{d} t}=-\lambda A \, \,for\, eq \,1 \\\frac{\mathrm{d} B}{\mathrm{d} t}=-2\lambda B\, \,for\, eq \,2 \\=>\frac{\mathrm{d} B}{\mathrm{d} t}_{total}=\lambda A-2\lambda B=0 \\=>A=2B$

so it its possible when quantity of A is double the quantity of B

Arun Kumar

IIT Delhi

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Modern Physics> Radioactive Decay...

The decay constant for A----->B is λThe decay constant for B----->C is 2λAt t= 0 A is N0 At t= 0B is 0 At t= 0 C is 0At t= t A is N1 At t= t B is N2 At t= t C is N3The ratio of N1 to N2 when N2 is maximum ,isA) at no time this is possibleB) 2C) 1/2D) (Ln 2)/2Please give detailed solution.

Ankit Sharma , 12 Years ago

Arun Kumar

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