Part 2
90% of the active nuclei present in a radioactive sample are found to remain undecayed after 1 day. The percentage of undecayed nuclei left after two days will be
17
Jun
90% of the active nuclei present in a radioactive sample are found to remain undecayed after 1 day. The percentage of undecayed nuclei left after two days will be 90% of the active nuclei present in a radioactive sample are found to remain undecayed after 1 day. The percentage of undecayed nuclei left after two [...]
The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T, then
17
Jun
The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T, then The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T then June [...]
The half-life of 215 At is 100 μs. The time taken for the radioactivity of sample of 215 At to decay to 1/16 th of its initial value is
17
Jun
The half-life of 215 At is 100 μs. The time taken for the radioactivity of sample of 215 At to decay to 1/16 th of its initial value is The half-life of 215 At is 100 μs. The time taken for the radioactivity of sample of 215 At to decay to 1/16 th of its [...]
The half- life of radioactive radon is 3.8 days. If the initial mass of radon is 150 mg the mass remaining undecayed after 38 days is
17
Jun
The half- life of radioactive radon is 3.8 days. If the initial mass of radon is 150 mg the mass remaining undecayed after 38 days is The half- life of radioactive radon is 3.8 days. If the initial mass of radon is 150 mg the mass remaining undecayed after 38 days is June 17, 2021 [...]
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?
17
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.
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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
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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 [...]