If the momentum of an electron changes by ' $\mathrm{P}$ ' then the de-Broglie wavelength associated with it…

If the momentum of an electron changes by ' $\mathrm{P}$ ' then the de-Broglie wavelength associated with it changes by $5 \%$. Then the initial momentum of the electron is
  1. $\frac{20}{\mathrm{P}}$
  2. $20 \mathrm{P}$
  3. $\frac{\mathrm{P}}{20}$
  4. $30 \mathrm{P}$

Solution

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Asked in: AP EAMCET 2017 (25 Apr Shift 2)

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