The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg)

The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg) accelerated through a potential difference of 1 kV is

(a) 600 Å
(b) 0.9 x 10⁻¹² m
(c) 7 Å
(d) 0.9 Å

0.9 x 10⁻¹² m

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KA2007

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