Question

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

• A. ${\lambda }_{ph}>{\lambda }_{el}$
• B. ${\lambda }_{ph}<{\lambda }_{el}$
• C. ${\lambda }_{ph}={\lambda }_{el}$
• D. $\frac{{\lambda }_{el}}{{\lambda }_{ph}}=c$

Answer 1

Answer: (A)

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