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IMPORTANT
Earn 100

Give an example where energy is converted into matter.

Important Questions on Mass-Energy Equivalence : Nuclear Binding Energy

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IMPORTANT
Name the particles and radiation involved in a 'pair prodcution'. Give equation relating them.
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Can a 0.75 MeV γ-photon cause pair-production?
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What is the minimum energy which a gamma ray photon must possess in order to produce electron-position pair?
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What is unified atomic mass unit u? State it's relation to kg.
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What is the meaning of 'atomic mass unit'? Calculate the equivalent energy in MeV of a unified atomic mass unit.
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By annihilation of one γ-photon, an electron and a positron are obtained. If kinetic energy of the pair so obtained is 0.88 MeV, what was the energy of the photon?
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IMPORTANT
The isotope O168 has 8 protons, 8 neutrons and 8 electrons; while the isotope B4e8 has 4 protons, 4 neutrons and 4 electrons. Yet the ratio of their atomic masses is not exactly 2. Why?
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12th ICSE
IMPORTANT
What is the significance of binding energy per nucleon of a nucleus of a radioactive element?