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CBSE Class 12-science Answered

Q.In a fusion/fission , the number of neutron and proton remains the same on both sides then how does mass converts into energy?
Asked by Ravi consul | 04 Mar, 2015, 06:44: PM
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If the nucleons bound in a nucleaus are seperated from each other, we find that the sum of their masses is greater than the mass of the nucleus. When nucleons are bound in a nucleus, some of the mass gets converted into energy that binds the nucleons together in the nucleus. This energy equal to the binding energy is spent to seperate these nucleons apart from one another. It is this energy that appears in the form of increased mass. 
Answered by Jyothi Nair | 05 Mar, 2015, 01:15: PM
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CBSE 12-science - Physics
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Asked by murshidibrahimkk | 08 Feb, 2024, 10:28: AM
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CBSE 12-science - Physics
. A nucleus of mass number 240 and having binding energy/nucleon 7.6 MeV splits into two fragments Y, Z of mass numbers 110 and 130 respectively. If the binding energy/nucleon of Y, Z is equal to 8.5 MeV each, calculate the energy released in the nuclear reaction.
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Asked by kailasks2007 | 28 Dec, 2023, 08:14: PM
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CBSE 12-science - Physics
Please answer this question. Draw a graph showing the variation of binding energy per nucleon as a function of mass number A. The binding energy per nucleon for heavy nuclei (A > 170) decreases with the increase in mass number. Explain.
Asked by varma.renu9481 | 06 Mar, 2023, 05:44: PM
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CBSE 12-science - Physics
Binding energies of 8O16 and 17Cl35 are 127.35 MeV and 289.3 MeV respectively. Which of the two nuclei are more stable?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
What is Q- value of a nuclear reaction?
Asked by Topperlearning User | 02 Jun, 2015, 01:03: PM
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CBSE 12-science - Physics
  A neutron is absorbed by a 3 LSyntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. nucleus with subsequent emission of Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. - particle Write the corresponding nuclear reaction. Calculate the energy released in this reaction. Given mass of 3 LSyntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. = 6.015126 a.m.u. Mass of 2Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.e = 4.000 26044 a.m.u. Mass of neutron begin mathsize 14px style open parentheses blank subscript 0 straight n with 1 on top close parentheses end style = 1.0086654 a.m.u. Mass of tritium Syntax error from line 1 column 58 to line 1 column 82. Unexpected '<mstyle '. = 3.016049 a.m.u.  
Asked by Topperlearning User | 02 Jun, 2015, 10:23: AM
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CBSE 12-science - Physics
Why is nuclear fusion not possible in laboratory?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
Express 16mg mass into equivalent energy in electron volt?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
Draw a curve between mass number and binding energy per nucleon. Give two salient features of the curve. Hence define binding energy?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
A nucleus Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. undergoes β- decay and becomes Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '., Calculate the maximum kinetic energy of electrons emitted assuming that the daughter nucleus and anti- neutrino carry negligible kinetic energy. Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.
Asked by Topperlearning User | 09 Jul, 2014, 12:48: PM
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