A particle is moving 5 times as fast as an electron

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

Problem

A particle is moving 5 times as fast as an electron. The ratio of the de-Broglie wavelength of the particle to that of the electron is

1.878 \times 10^{-4}

. The mass of the particle is close to: (1)

4.8 \times 10^{-27} \text{ kg}

(2)

9.1 \times 10^{-31} \text{ kg}

(3)

1.2 \times 10^{-28} \text{ kg}

(4)

9.7 \times 10^{-28} \text{ kg}