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A radioactive material decays by simulat...

A radioactive material decays by simulataneous emission of two particle from the with respective half - lives `1620` and `810` year . The time , in year , after which one - fourth of the material remains is

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CENGAGE PHYSICS-NUCLEI-QUESTION BANK
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  2. A nucleus of mass number 220 , initially at rest, emits an alpha -part...

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  3. A radioactive material decays by simulataneous emission of two particl...

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  4. In an alpha -decay, the kinetic energy of alpha-particles is 48 MeV a...

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  5. The distance of closest approach of a certain nucleus is 7.2 fm and it...

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  6. The activity of a fresh radioactive solution of volume 1 litre is 1200...

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  8. Radioactive NUCLEI A and B with half lives T and 21 , respectively, di...

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  9. Geiger counter reading of a radioactive sample is initially 6800 count...

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  10. A sample of beta active NUCLEI has a half life of 1.00 min. Initially,...

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  11. For a substance, the average life for alpha -emission is 3240 years an...

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  12. A nucleus with mass number 220 , initially at rest, emits an alpha -pa...

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  13. Consider the following 'fusion reaction: underset(1)overset(2) H +unde...

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  14. A radioactive sample S(1) having the activity A(1) has twice the numbe...

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  15. Two radioactive elements R and S disintegrate as RtoP+alpha,lamda(R)...

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  16. The radioactive sources A and B, initially containing the same number ...

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  17. A nucleus X, initially at rest, decays into a nucleus Y with the emiss...

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  18. The graph represents the decay of a newly prepared sample of radioacti...

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  19. The threshold energy (in (MeV) ) for the following nuclear reaction to...

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  20. Half life of a radioactive substance is 2.34 min. It is produced at'a ...

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