Question

While comparing the alpha particle, neutron, and beta particle, the alpha particle has the lowest de – Broglie wavelength.

(a) True

(b) False

The question was posed to me during a job interview.

The doubt is from Wave Nature of Matter in chapter Dual Nature of Radiation and Matter of Physics – Class 12

Answer 1

The correct choice is (a) True

For explanation: Yes, this is a true statement. In comparison with beta particle and neutron, the alpha particle has a higher mass, followed by neutron and then beta particle. According to de – Broglie wavelength equation, the wavelength is inversely proportional to the mass. Hence, the alpha particle has the lowest wavelength since it has the highest mass.