Chapter 14 – Nuclear Physics and Radioactivity
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In a sample of radioactive material, what fraction of initial number of active nuclei will remain undistintegrated after half of a half-life of the sample?
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Jun
In a sample of radioactive material, what fraction of initial number of active nuclei will remain undistintegrated after half of a half-life of the sample? In a sample of radioactive material what fraction of initial number of active nuclei will remain undistintegrated after half of a half-life of the sample? June 17, 2021 Category: Cengage [...]
A fraction f1 of a radioactive sample decays in one mean life and a fraction f2 decays in one half-life
17
Jun
A fraction f1 of a radioactive sample decays in one mean life and a fraction f2 decays in one half-life A fraction f1 of a radioactive sample decays in one mean life and a fraction f2 decays in one half-life June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics [...]
Let T be the mean life of a radioactive sample. 75% of the active nuclei present in the sample initially will decay in time.
17
Jun
Let T be the mean life of a radioactive sample. 75% of the active nuclei present in the sample initially will decay in time. Let T be the mean life of a radioactive sample. 75% of the active nuclei present in the sample initially will decay in time. June 17, 2021 Category: Cengage NEET by [...]
Three fourth of the active decays in a radioactive sample decay in 3/4 sec. The half-life of the sample is
17
Jun
Three fourth of the active decays in a radioactive sample decay in 3/4 sec. The half-life of the sample is Three fourth of the active decays in a radioactive sample decay in 3/4 sec. The half-life of the sample is June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics [...]
The percentage of quantity of a radioactive material that remains after 5 half-lives is approximately .
17
Jun
The percentage of quantity of a radioactive material that remains after 5 half-lives is approximately . The percentage of quantity of a radioactive material that remains after 5 half-lives is approximately . June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics and Radioactivity , Part 2 ,
An accident occurs in a laboratory in which a large amount of a radioactive material, having a half life of 20 days, becomes embedded in the floor and walls so that the level of radiation is 32 times the permissible level. The laboratory can be safely occupied after
17
Jun
An accident occurs in a laboratory in which a large amount of a radioactive material, having a half life of 20 days, becomes embedded in the floor and walls so that the level of radiation is 32 times the permissible level. The laboratory can be safely occupied after An accident occurs in a laboratory in [...]
In a radioactive series, .92U238 charges to .82Pb206 through n1(α-decay processes) and n2(β−decay processes)
17
Jun
In a radioactive series, .92U238 charges to .82Pb206 through n1(α-decay processes) and n2(β−decay processes) .92U238 charges to .82Pb206 through n1(α-decay processes) and n2(β−decay processes) In a radioactive series June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics and Radioactivity , Part 2 ,
Consider a radioactive material of half-life 1.0 minute. If one of the nuclei decays now, the next one will decay
17
Jun
Consider a radioactive material of half-life 1.0 minute. If one of the nuclei decays now, the next one will decay Consider a radioactive material of half-life 1.0 minute. If one of the nuclei decays now the next one will decay June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics [...]
Which of the following assertions are correct ? (i) A neutron can decay to a proton only inside a nucleus
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Jun
Which of the following assertions are correct ? (i) A neutron can decay to a proton only inside a nucleus Which of the following assertions are correct ? (i) A neutron can decay to a proton only inside a nucleus June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics [...]
In a radioactive decay, a nucleus is transformed into another with the emission of a positron. In this process the neutron-proton ratio
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Jun
In a radioactive decay, a nucleus is transformed into another with the emission of a positron. In this process the neutron-proton ratio a nucleus is transformed into another with the emission of a positron. In this process the neutron-proton ratio In a radioactive decay June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter [...]