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J & K CET Medical J & K - CET Medical Solved Paper-2011

  • question_answer
    The de-Broglie wavelength of a ball of mass 10 g moving with a velocity of\[10\text{ }m{{s}^{-1}}\]is \[[h=6.626\times {{10}^{-34}}Js]\]

    A)  \[6.626\times {{10}^{-33}}m\]  

    B)  \[6.626\times {{10}^{-29}}m\]

    C)  \[6.626\times {{10}^{-31}}m\]  

    D) \[6.626\times {{10}^{-36}}m\]

    Correct Answer: A

    Solution :

                    \[m=10\text{ }g=0.01\text{ }kg,\text{ }v=10\text{ }m{{s}^{-1}}\] According to de-Broglie equation,                 \[\lambda =\frac{h}{mv}\]                 \[=\frac{6.626\times {{10}^{-34}}}{0.01\times 10}\] \[=6.626\times {{10}^{-33}}m\]


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