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NEET Sample Paper NEET Sample Test Paper-27

  • question_answer
    Water is cooled to form ice, if mass energy equivalence is taken into account this should cause the mass of water to:

    A)  Increase

    B)  Decrease

    C)  Remain unchanged

    D)  First increase then decrease

    Correct Answer: B

    Solution :

    If water is cooled energy is given out in latest heat. When E is the energy given out then from Einstein is equation. \[E=\Delta m{{c}^{2}}\] Where,        \[\Delta m\]= reduced mass                         \[\Delta m=\frac{E}{{{c}^{2}}}\] It is too small to notice.


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