JEE Main & Advanced Chemistry Structure of Atom Question Bank Dual nature of electron

  • question_answer The de-Broglie wavelength of a particle with mass \[1gm\] and velocity \[100m/\sec \] is              [CBSE PMT 1999; EAMCET 1997; AFMC 1999; AIIMS 2000]

    A)                 \[6.63\times {{10}^{-33}}m\]     

    B)                 \[6.63\times {{10}^{-34}}m\]

    C)                 \[6.63\times {{10}^{-35}}m\]     

    D)                 \[6.65\times {{10}^{-35}}m\]

    Correct Answer: A

    Solution :

                    \[\lambda =\frac{h}{mv}=\frac{6.63\times {{10}^{-34}}}{{{10}^{-3}}\times 100}=6.63\times {{10}^{-33}}m\]

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