Question

Wavelengths associated with photon and electron are $\lambda _{p h}$ and $\lambda _{e l}$ in a a given energy $\left(\right.\left(10\right)^{- 2}J\left.\right)$ then, correct statement will be--

• A. $\lambda _{p h}>\lambda _{e l}$
• B. $\lambda _{p h} < \lambda _{e l}$
• C. $\lambda _{p h}=\lambda _{e l}$
• D. $\frac{\lambda _{e l}}{\lambda _{p h}}=c$

Answer 1

Answer: (A)

Wavelength of photon will be greater than that of electron because mass of photon is less than that of electron
$\Rightarrow \, \, \lambda _{p h}> \, \lambda el$