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Applications & Mixed Concepts (Q-076 to Q-100)

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  1. 1.

    A nucleus emits 2 alpha particles and 1 beta-minus particle. The change in atomic number is: -

  2. 2.

    The half-life of a radioactive substance is T. The time for 87.5% of the substance to decay is: -

  3. 3.

    Which type of radiation is deflected most in a magnetic field? -

  4. 4.

    In a uranium-lead dating experiment, if N_Pb/N_U = 3, how many half-lives have passed? -

  5. 5.

    Carbon-14 has a half-life of 5730 years. A sample shows 1/8 of the original C-14 activity. The age of the sample is: -

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