What should be the velocity of an electron so that its momentum becomes equal to that…

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

What should be the velocity of an electron so that its momentum becomes equal to that of a photon of wavelength

5200\ \text{\AA}

? (1)

700\ \text{m s}^{-1}

(2)

1000\ \text{m s}^{-1}

(3)

1400\ \text{m s}^{-1}

(4)

2800\ \text{m s}^{-1}