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Atoms and Nuclei Test - 134

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Atoms and Nuclei Test - 134
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  • Question 1
    4 / -1
    The count rate of 10 g of radioactive material was measured at different times and this has been shown in the figure. The half life of material and the total counts (approximately) in the first half life period, respectively are

    Solution

  • Question 2
    4 / -1
    The fraction f of radioactive material that has decayed in time t, varies with time t. The correct variation is given by the curve

    Solution

  • Question 3
    4 / -1
    The plot of the number (N) of decayed atoms versus activity (A) of a radioactive substance is
    Solution

  • Question 4
    4 / -1
    If in hydrogen atom, radius of nth Bohr orbit is rn, frequency of revolution of electron in nth orbit is fn, choose the correct option
    Solution

  • Question 5
    4 / -1
    The graph between the instantaneous concentration (N) of a radioactive element and time (t) is
    Solution

  • Question 6
    4 / -1
    In figure X represents time and Y represents activity of a radioactive sample. Then the activity of sample, varies with time according to the curve

    Solution

  • Question 7
    4 / -1
    The graph which represents the correct variation of logarithm of activity (log A) versus time, in figure is

    Solution

  • Question 8
    4 / -1
    The charge density in a nucleus varies with distance from the centre of the nucleus according to the curve in figure
  • Question 9
    4 / -1
    The curve between the activity A of a radioactive sample and the number of active atoms N is
    Solution

  • Question 10
    4 / -1
    The graph between number of decayed atoms N\' of a radioactive element and time t is
    Solution

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