NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 m/s is approximately

    A) \[{{10}^{-33}}\text{metres}\]   

    B)        \[{{10}^{-31}}\text{metres}\]

    C) \[{{10}^{-16}}\text{metres}\]   

    D)        \[-N{{H}_{2}}\] Planck's constant, \[h=6.63\times {{10}^{-34}}Js\]

    Correct Answer: A

    Solution :

    [a] \[\lambda =\frac{h}{mv}=\frac{6.63\times {{10}^{-34}}}{0.060\times 10}=1.1\times {{10}^{-33}}m\]


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