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Physics Test 27...

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  • Question 1
    4 / -1

    The energy released by the fission of one uranium atom is 200 MeV. The number of fissions required per second to produce 3.2 W of power is

  • Question 2
    4 / -1

    If in a nuclear fission, a piece of uranium of mass 0.5 g is lost, then the energy obtained in kWh is

  • Question 3
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    What is the rest mass energy of an electron?

  • Question 4
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    Which of the following are not emitted by a radioactive substance?

  • Question 5
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    During a negative beta decay,

  • Question 6
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    The half-life of Pa-218 is 3 minutes. What mass of a 16 g sample of Pa-218 will remain after 15 minutes?

  • Question 7
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    Mp denotes the mass of a proton and Mn that of a neutron. A given nucleus of binding energy B contains Z protons and N neutrons. The mass M (N, Z) of the nucleus is given by

  • Question 8
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    The circuit shown in the figure contains two diodes D1 and D2, each with a forward resistance of 50 ohms and infinite backward resistance. If the battery voltage is 6 V, the current (in amperes) through the 100 ohm resistance is

  • Question 9
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    I is the current passing through a circular wire. If the radius of the wire is changed to twice, then what will be the current passing through the wire?

  • Question 10
    4 / -1

    To obtain a p-type semiconductor germanium crystal, it must be doped with foreign atoms whose valency is

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