A radioactive element is produced in nuclear reactor at a constant rate R(=numbers of nuclei per second). Its half-life is `T_(1//2)`. How much time, in terms of `T_(1//2)`. Is required to produce 50% of the equilibrium quantity of the radioactive element? is the result dependent of R?
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It is proposed to use the nuclear fusion reaction, `._1^2H+_1^2Hrarr_2^4He` in a nuclear reactor `200 MW` rating. If the energy from the above reactio
Energy released in the nuclear fusion is `Q = Deltamc^(2) = Deltam(931) MeV` (where `Deltam` is in amu) `Q = (2 xx 2.0141 - 4.0026) xx 931 MeV = 23.834...
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A radioactive element has half-life period of 30 days. How much of it will be left after 90 days?
Correct Answer - C `90 "days" rarr 3 "half lives"`, left `1/8` i.e., `12.5%` Disintegrated `= 100-12.5 = 87.5%`
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An alpha active element has molar mass M and has a half life of `tau`. A large plate of thickness `alpha` is made from the radioactive element. Densit
Correct Answer - `(ln^(2)2)/(2)(alpharhoN_(A))/(tauM)`
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Nuclei of radioactive element `A` are produced at rate `t^(2)` (where `t` is time) at any time `t`. The element `A` has decay constant `lambda`. Let `
Correct Answer - `(2t_(0)-lambdat_(0)^(2))/(lambda_(2))`
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In a reactor, an element X decays to a radioactive element Y, at a constant rate r atoms per second. Each decay reaction releases energy `E_(1)`. Half
Correct Answer - `[(i)" "eta r[E_(1)+E_(2)(1-e^((t log 2)/T))], (ii)" "eta r(E_(1)+E_(2))]`
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A nuclear reactor generates `P = 20 MW` power at efficiency `eta = 60%` by nuclear fission of a radio-nuclide whose half life is `T = 2.2` years. If e
Correct Answer - `[(T)/(ln 2)ln(1+(mu N eta Eln 2)/(PT)) = 10^(8) ln (1.0576)s]`
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Radioactive isotopes are produced in a nuclear physics experiment at a constant rate `dN//dt=R` .An inductor of inductance 100 mH, a resistor of resis
Correct Answer - `[6.93 xx 10^(-4)s]`
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A reaction develop nuclear energy at the rate of `3 xx 10^(4) kW`. How many atoms of `.^(215)U` undergo fission per second? How much `.^(235)U` is bur
Correct Answer - `9.375 xx 10^(17)`, 1.217 kg
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Energy produced in nuclear fusion is much larger than that produced in nuclear fission. Why is it difficult to use fusion to produce energy ?
Nuclear fusion involves the fusion of lighter nuclei to form a heavy nucleus which is accompanied by an enormous amount of energy (heat). Fusion reaction requires extremely high temperature typically of...
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A man travels half time of its journey with speed of 5m/s and for remaining half time he moves half of its total distance travelled, with speed of 3 m
Correct Answer - 4.5 m/s
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