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    Ankita Radhe Garde
    Ankita Radhe Garde
    Asked: 3 years agoIn:

    Radioactive disintergation always follow `I` order kinetics and is independent of all external factors and is represented by the relation `N = N_(0) e^(-lambda t)` where `lambda` is decay constant and `N` atoms are left at time `t`. The radioactive nature of element is expressed in terms of average life numerically equal to decay constant `(1//lambda)` however all the radioactive do not lose their radioactive nature in thier average life. The radioactive emission involves `alpha, beta` particles as well as `gamma-` rays.The penertrating power order is `alpha lt beta lt gamma`. The emissions can perntrate even thick steel walls but are however unable to penttrate `Pb` blocks. The `S` unit fo rate of decay is `dps`.
    Report the wrong realation:
    A. Amount decayed after `n` halves `= (N_(0) [2^(n) -1])/(2)`
    B. Av. Life `= t_(1//2) xx (1)/(0.693)`
    C. Fraction of nuclie decayed `= 1 – e^(-lambda t)`
    D. None of these

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