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The radioactive sources A and B of half ...

The radioactive sources A and B of half lives of 2hr and 4hr respectively, initially contain the same number of radioactive atoms. At the end of 2 hours, their rates of disintegration are in the ratio:-

A

`4: 1`

B

` 2 : 1`

C

`sqrt(2) : 1`

D

`1 : 1`

Text Solution

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The correct Answer is:
C
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MOTION-RADIOACTIVITY & NUCLEAR PHYSICS-Exercise -1
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  2. A radioactive sample contains two elements P and Q . The mass ...

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  3. The radioactive sources A and B of half lives of 2hr and 4hr respectiv...

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  4. The half life of polonium is 140 days. In what time will 15 g of polon...

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  5. The half life of radium is 1600 years . In how much time will ...

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  6. Calculate the half life period of a radioactive substance if its activ...

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  7. When 64 gms of a radioactive element are carried from Jaipure t...

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  8. A radioactive element with mass 8 gm and haslf life 100 second ...

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  9. The activity of a radioactive elements (decay constant lambda) ...

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  10. A fraction f(1) of a radioactive sample decays in one mean lie and a f...

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  11. What percentage of the atoms in a sample will remain undecayed...

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  12. In a RA element the fraction of initiated amount remaining after...

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  13. The mean lives of a radioactive material for alpha and beta rad...

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  14. Activity of a radioactive substance is R(1) at time t(1) and R(2) ...

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  15. The activity of a radioactive sample drops fo 1//32 of its initi...

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  16. A radioactive material emits 20 beta - perticles per sec . At 10...

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  17. We get N(1) and N(2) beta- perticles per second from two specimen...

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  18. There are two radio nuceli A and B. A is an alpha emitter and B a beta...

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  19. The number of alpha and beta- emitted during the radioactive decay cha...

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  20. When .90 Th^228 transforms to .83 Bi^212, then the number of the emitt...

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