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

  • question_answer A 200g golf ball is moving with a speed of 5 m per hour. The associated wave length is \[(h=6.625\times {{10}^{-34}}J\text{-}sec)\] [MP PET 2003]

    A)                 \[{{10}^{-10}}\,m\]         

    B)                 \[{{10}^{-20}}\,m\]

    C)                 \[{{10}^{-30}}\,m\]         

    D)                 \[{{10}^{-40}}\,m\]

    Correct Answer: C

    Solution :

                    \[\lambda =\frac{h}{mv}=\frac{6.625\times {{10}^{-34}}}{0.2\,kg\times \frac{5}{60\times 60\,m{{s}^{-1}}}}={{10}^{-30}}m\].

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