Assertion : According to de Broglie, the wavelengths associated with electrons and other subatomic p

Question

Assertion : According to de Broglie, the wavelengths associated with electrons and other subatomic particles can be detected experimentally.\ Reason : The wavelength associated with any material particle is directly proportional to its mass.

Professor PC Thomas Classes · Answer

(c) : According to de Broglie equation, $\lambda=\frac{h}{m v}$, hence wavelength is inversely proportional to mass of a particle and hence can be observed only for microscopic particles with very small mass.