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Kinetic energy of the alpha particle from the Q value of an alpha decay

This type of question, asked 2 times: 2021 Paper 13, 8 Apr 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    2021 Paper 13

    17
    Mass number of a nucleus is 184. It undergoes alpha decay. If Q value is 5.5MeV5.5MeV, find kinetic energy of the emitted alpha particle.

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  2. Question 2

    8 Apr 2026 S2

    19
    Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows spontaneous α\alpha-decay with same Q value of 1 MeV . The ratio of energies of α\alpha-rays produced by A and BB is ____\_\_\_\_ .

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