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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 - 4 LEVEL - II
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  2. Some laws/processes are given in column-I. Match these with the physic...

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  3. Half–life of a radioactive substance A is 4 days. The probability that...

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  4. Carbon 14 is used to determine the age of organic material. The proced...

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  5. Carbon 14 is used to determine the age of organic material. The procer...

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  6. Carbon 14 is used to determine the age of organic material. The proced...

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  7. A positron is emitted from .(11)Na^(23) . The ratio of the atomic mass...

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  8. A positron is emitted from .(11)Na^(23) . The ratio of the atomic mass...

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  9. A radioactive sample S1 having an activity of 5muCi has twice the numb...

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  10. The total number of alphaandbeta particles emitted in the nuclear reac...

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  11. The numberr of neutrons emitted when ""(92)""^(235)U undergoes control...

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  12. Bombardment of aluminium by alpha-"particle" leads to its artificial d...

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

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  14. Loss of beta-particles is equivalent to

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  16. A freshly prepared sample of a radioisotope of half - life 1386 s has...

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  18. In the nuclear transmutation : .(4)^(9) Be + X rarr (4) ^(8) Be +Y ...

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  19. A closed vessel with rigid walls contains 1 mole of .(92)^(238)U and 1...

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  20. A plot of the number of neutrons (n) against the number of protons (p...

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