Assertion (A) : If an electron has the same wavelength as a photon, they have the same energy. Reason (R) : By de Broglie hypothesis, p = h/λ for both the electron and the photon.

Both (A) and (R) are true and (R) is the correct explanation of (A). Both (A) and (R) are true but(R) is NOT the correct explanation of (A). (A) is true but (R) is false. (R) is true but (A) is false.

(R) is true but (A) is false.

$\text{Energy of photon }E = \frac{hc}{\lambda}$ $\text{Energy of electron } E' = \frac{p^2}{2m} = \frac{h^2}{2m\lambda^2}$