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A fraction f(1) of a radioactive sample ...

A fraction `f_(1)` of a radioactive sample decays in one mean lie and a fraction `f_(2)` decays in one half-life

A

`f_(1) gt f_(2)`

B

`f_(1) lt f_(2)`

C

`f_(1) = f_(2)`

D

May be (A). (B) or ( C ) depending on the values of the mean life and half life.

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The correct Answer is:
A
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MOTION-RADIOACTIVITY & NUCLEAR PHYSICS-Exercise -1
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  2. The activity of a radioactive elements (decay constant lambda) ...

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

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

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

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

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

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

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

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

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

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

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

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  14. A radioactive nucleus undergoes a series of decay according to the sch...

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  15. The particles not emitted by radioactive susbstace are:

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  16. gamma- rays are produced ………. , alpha or beta- decay

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  17. The particle emitted in the nuclear reaction .(Z) X^(A) = .(Z+1)...

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  18. By neutrino hypothesis which conservation law for beta- decay c...

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  19. During a negative beta decay,

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  20. In a given magnetic field for the particle less of same velocit...

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