Q156 / 160 · AP EAMCET 2017 (25 Apr Shift 2) · Physics

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

A
$\frac{20}{\mathrm{P}}$
Correct answer
B
$20 \mathrm{P}$
C
$\frac{\mathrm{P}}{20}$
D
$30 \mathrm{P}$

Hence, the correct answer is option: 'B'.

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