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The distance of the closest approach of an alpha particle fired at a nucleus with kinetic of an alpha particle fired at a nucleus with kinetic energy K is `r_(0)`. The distance of the closest approach when the `alpha` particle is fired at the same nucleus with kinetic energy 2K will be

A

`2r_0`

B

`4r_0`

C

`r_0/2`

D

`r_0/4`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-NUCLEI-Exercise-II
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  3. The distance of the closest approach of an alpha particle fired at a n...

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  7. Half-life of a radioactive substance is 12.5 h and its mass is 256 g. ...

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  8. Two radioactive materials X1 and X2 contain same number of nuclei. I...

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  9. In order to dcrease radioactive nuclei to one million of its initial n...

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  10. The half life of radium is 1600 years. The mean life of radium is

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  11. The activity of a radioactive element decreased to one - third of orig...

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  12. The half-life of a radioactive substance is 100 years, Calculate in ho...

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  13. The counting rate observed from a radioactive source at t=0 second was...

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  14. Two nuclei P, Q have equal no.of atoms at t= 0. Their half-life are 3 ...

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  15. The sample of a radioactive substance has 10^6 nucei. Its half life is...

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  16. One mole of radium has an activity of 1/3.7 kilo curie. Its decay cons...

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  17. A radioactive nucleus undergoes a series of decays according to the se...

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  18. Tritium has a half-life of 12.5 y undergoing beta decay. What fraction...

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  19. A freshly prepared radioactive source of half-life 2 h emits radiation...

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  20. If 10% of a radioactive material decays in 5 days, then the amount of ...

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