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Two radioactive nuclides A and B have ha...

Two radioactive nuclides A and B have half-lives 50 min and 10 min respectively . A fresh sample contains the nuclides of B to be eight times that of A. How much time should elapse so that the mumber of nuclides of A becomes double of B ?

A

30

B

40

C

50

D

None

Text Solution

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The correct Answer is:
C
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MOTION-RADIOACTIVITY -EXERCISE - 1
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  3. A radioacive element decays by parallel path as given below: A overs...

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  4. Two radioactive nuclides A and B have half-lives 50 min and 10 min res...

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  5. A radioactive sample had an initial activily of 56 dpm (disintegratio...

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  6. The radioactivity of sample is R(1) at a time T(1) and R(2) at a time ...

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  7. .(13)Al^(27) is a stable isotope. .(13)Al^(29) is expected to disinteg...

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  8. Loss of beta-particles is equivalent to

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  9. Which of the following nuclear reactions will generate an isotope ?

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  10. Which of the following processes represents a gamma- decay only ?

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  11. Select correct statment(s):

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  12. Consider the following nuclear reactions : .(92)^(238)M to (Y)^(X)N+...

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  17. Wooden article and freshly cut tree show activity 7.6 and 15.2 min""^(...

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  18. C(14) is a beta active nucleus. A sample of C^(14) H(4) gas kept in a ...

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  19. Helium nuclei combines to form an oxygen nucleus. The energy released...

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  20. Let Fpp, Fpn and Fn denote the magnitudes of the net force by a proton...

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