what should be the velocity of an electron so that its momentum becomes equal

what should be the velocity of an electron so that its momentum becomes equal to that of a photon of wavelength 5200 Å?

(a) 700ms⁻¹
(b) 1000ms⁻¹
(c) 1400ms⁻¹
(d) 2800ms⁻¹

2800ms⁻¹

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ML2012

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