Chapter 13 – Nuclei
A radioactive isotope has a half – life of T years. How long will it take the activity to reduce to
13
Sep
A radioactive isotope has a half – life of T years. How long will it take the activity to reduce to A radioactive isotope has a half - life of T years. How long will it take the activity to reduce to September 13, 2021 Category: Chapter 13 - Nuclei , NCERT Exemplar Class 12 [...]
Obtain the binding energy of the nuclei 56 26 F e and 209 83 B i 2656Fe and 83209Bi in units of MeV from the following data: m ( 56 26 F e ) = 55.934939 u m(2656Fe) = 55.934939 u m ( 209 83 B i ) = 208.980388 u
13
Sep
Obtain the binding energy of the nuclei 56 26 F e and 209 83 B i 2656Fe and 83209Bi in units of MeV from the following data: m ( 56 26 F e ) = 55.934939 u m(2656Fe) = 55.934939 u m ( 209 83 B i ) = 208.980388 u (a) Two stable isotopes [...]
Obtain the binding energy (in MeV) of a nitrogen nucleus ,(147N) given m(147N) =14.00307 u
13
Sep
Obtain the binding energy (in MeV) of a nitrogen nucleus ,(147N) given m(147N) =14.00307 u (147N) given m(147N) =14.00307 u Obtain the binding energy (in MeV) of a nitrogen nucleus September 13, 2021 Category: Chapter 13 - Nuclei , NCERT Exemplar Class 12 , Physics ,
The three stable isotopes of neon: 2010Ne 2110Ne and 2210Ne have respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u, respectively. Obtain the average atomic mass of neon.
13
Sep
The three stable isotopes of neon: 2010Ne 2110Ne and 2210Ne have respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u, respectively. Obtain the average atomic mass of neon. 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u 20.99 [...]
(a) Two stable isotopes of lithium 63Li and 73Li have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.
13
Sep
(a) Two stable isotopes of lithium 63Li and 73Li have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium. (a) Two stable isotopes of lithium 63Li and 73Li have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and [...]
Sometimes a radioactive nucleus decays into a nucleus which itself is radioactive . An example is Assume that we start with 1000 38S nuclei at time t=0. the number of 38Cl of count zero at t=0 and will again be zero at t=∞. At what value of t, would the number of counts be a maximum?
09
Jun
Sometimes a radioactive nucleus decays into a nucleus which itself is radioactive . An example is Assume that we start with 1000 38S nuclei at time t=0. the number of 38Cl of count zero at t=0 and will again be zero at t=∞. At what value of t, would the number of counts be a [...]
A piece of wood form the ruins of an nuclei an ancient building was found to have a .14C activity of 12 disintegrations per minute per gram of its carbon content. The .14C activity of the living wood is 16 disintegrations / minute / gram. How long ago did the trees, form which the wooden sample came, die? Given half-life of .14C is 5760 years.
09
Jun
A piece of wood form the ruins of an nuclei an ancient building was found to have a .14C activity of 12 disintegrations per minute per gram of its carbon content. The .14C activity of the living wood is 16 disintegrations / minute / gram. How long ago did the trees, form which the wooden [...]
Consider a radioactive nucleus A which decays to a stable nucleus C through the following sequences: A→B→C Here, B is an intermediate nucleus which is also radioactive. Considering that are N0 atoms of A initially, plot the graph showing the variation of number of atoms of A and B versus time.
09
Jun
Consider a radioactive nucleus A which decays to a stable nucleus C through the following sequences: A→B→C Here, B is an intermediate nucleus which is also radioactive. Considering that are N0 atoms of A initially, plot the graph showing the variation of number of atoms of A and B versus time. B is an intermediate [...]
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B is an intermediate nucleus which is also radioactive. Considering that are N0 atoms of A initially ,
Consider a radioactive nucleus A which decays to a stable nucleus C through the following sequences: A→B→C Here ,
plot the graph showing the variation of number of atoms of A and B versus time. ,
Which one of the following can not emit radiation and why? Excited nucleus, excited electron.
09
Jun
Which one of the following can not emit radiation and why? Excited nucleus, excited electron. excited electron. Which one of the following can not emit radiation and why? Excited nucleus June 9, 2021 Category: Chapter 13 - Nuclei , NCERT Exemplar Class 12 , Physics ,
Draw a graph showing the variation of decay rate with number of active nuclei.
09
Jun
Draw a graph showing the variation of decay rate with number of active nuclei. Draw a graph showing the variation of decay rate with number of active nuclei. June 9, 2021 Category: Chapter 13 - Nuclei , NCERT Exemplar Class 12 , Physics ,