Chapter 30 – Nuclear Physics
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On an average, a neutron loses half of its energy per collision with a quasi-free proton. To reduce a 2MeV neutron to a thermal neutron having energy 0.04 eV, the number of collisions required is nearly .
05
Jun
On an average, a neutron loses half of its energy per collision with a quasi-free proton. To reduce a 2MeV neutron to a thermal neutron having energy 0.04 eV, the number of collisions required is nearly . a neutron loses half of its energy per collision with a quasi-free proton. To reduce a 2MeV neutron [...]
A→λB→2λC T=0,N0,0, T N1 N2 N3 The ratio of N1 to N2 is maximum is
05
Jun
A→λB→2λC T=0,N0,0, T N1 N2 N3 The ratio of N1 to N2 is maximum is A→λB→2λC T=0 n^0 T N1 N2 N3 The ratio of N1 to N2 is maximum is June 5, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 30 - Nuclear Physics ,
90% of a radioactive sample is left undecayed after time t has elapsed. What percentage of the initial sample will decay in a total time 2t ?
05
Jun
90% of a radioactive sample is left undecayed after time t has elapsed. What percentage of the initial sample will decay in a total time 2t ? 90% of a radioactive sample is left undecayed after time t has elapsed. What percentage of the initial sample will decay in a total time 2t ? June [...]
An element X decays, first by positron emission and then two α-particles are emitted in successive radioactive decay. If the product nucleus has a mass number 229 and atomic number 89, the mass number of atomic number of element X are.
05
Jun
An element X decays, first by positron emission and then two α-particles are emitted in successive radioactive decay. If the product nucleus has a mass number 229 and atomic number 89, the mass number of atomic number of element X are. An element X decays first by positron emission and then two α-particles are emitted [...]
A radioactive nucleus x decay to a stable nucleus Y. Then, time graph of rate of formation of Y against time t will be :
05
Jun
A radioactive nucleus x decay to a stable nucleus Y. Then, time graph of rate of formation of Y against time t will be : A radioactive nucleus x decay to a stable nucleus Y. Then time graph of rate of formation of Y against time t will be June 5, 2021 Category: Cengage JEE [...]
In which of the following processes, the number of protons in the nucleus increase ?
05
Jun
In which of the following processes, the number of protons in the nucleus increase ? In which of the following processes the number of protons in the nucleus increase ? June 5, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 30 - Nuclear Physics ,
In an α -decay, the kinetic energy of α-particles is 48 MeV and Q value of the reaction is 50 MeV. The mass number of the mother nucleus is (assume that daughter nucleus is in ground state)
05
Jun
In an α -decay, the kinetic energy of α-particles is 48 MeV and Q value of the reaction is 50 MeV. The mass number of the mother nucleus is (assume that daughter nucleus is in ground state) In an α -decay the kinetic energy of α-particles is 48 MeV and Q value of the reaction [...]
A sample of radioactive material decays simultaneously by two processes A and B with half-lives 1/2 and 1/4h, respectively. For the first half hour it decays with the process A, next one hour with the process B, and for further half an hour with both A and B. If, originally, there were N0 nuclei, find the number of nuclei after 2 h of such decay.
05
Jun
A sample of radioactive material decays simultaneously by two processes A and B with half-lives 1/2 and 1/4h, respectively. For the first half hour it decays with the process A, next one hour with the process B, and for further half an hour with both A and B. If, originally, there were N0 nuclei, find [...]
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A sample of radioactive material decays simultaneously by two processes A and B with half-lives 1/2 and 1/4h ,
and for further half an hour with both A and B. If ,
find the number of nuclei after 2 h of such decay. ,
next one hour with the process B ,
originally ,
respectively. For the first half hour it decays with the process A ,
there were N0 nuclei ,
A certain radioactive material can undergo three different types of decay, each with different decay constant λ,2λ and 3λ. Then, the effective decay constant λeff is
04
Jun
A certain radioactive material can undergo three different types of decay, each with different decay constant λ,2λ and 3λ. Then, the effective decay constant λeff is 2λ and 3λ. Then A certain radioactive material can undergo three different types of decay each with different decay constant λ the effective decay constant λeff is June 4, [...]