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,

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

C

Explanation

According to de Broglie eqation, `lamda=h/(mv)`, hence wavelength is inversely proportional to mass of a particle and hence can be observed only for microscopic particles with very small mass.