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NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    An electron is moving through a field. It is moving (i) opposite an electric field (ii) perpendicular to a magnetic field as shown. For each situation the de-Broglie wave length of electron

    A) increasing, increasing

    B) increasing, decreasing

    C) decreasing, same

    D) same, Same

    Correct Answer: C

    Solution :

    \[\lambda \,\,=\,\frac{h}{mv}\] Since \[\nu \] is increasing in case (i), but it is not changing in case (ii). Hence in the first case de-Brogle wavelength will change, but in the second case, it remains the same.


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