NEET AIPMT SOLVED PAPER 1999

  • question_answer
                The de-Broglie wavelength of a particle with mass 1 g and velocity 100 m/s is:                        

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

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

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

    D)              \[6.65\times {{10}^{-36}}\,m\]

    Correct Answer: A

    Solution :

                    \[p=\frac{h}{\lambda }\] (de-Broglie equation)                 \[\lambda =\frac{h}{mv}(\because \,\,p=mv)\]             \[\lambda =\frac{6.63\times {{10}^{-34}}\,kg\,{{m}^{2}}/s}{{{10}^{-3}}\,kg\times 100\,m/s}=6.63\times {{10}^{-33}}\,m\]


You need to login to perform this action.
You will be redirected in 3 sec spinner