2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-48

  • question_answer
    If the momentum of an electron is changed by P, then the de-Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be:

    A) 200P                

    B) 400P 

    C) \[\frac{P}{200}\]                       

    D) 100P

    Correct Answer: A

    Solution :

    \[\lambda  =\frac{h}{p} \left[ de Broglie wavelength \right]\] \[p=\frac{h}{\lambda }\] \[\frac{\Delta P}{P}=\frac{\Delta \lambda }{\lambda }\] \[\frac{P}{{{P}_{initial}}}=\frac{0.5}{100}\] \[{{P}_{initial}}=200\,\operatorname{P}\]


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