Question

Statement -1: If an electron has the same wavelength as a photon, they have the same energy.
Statement-2 : By debroglie hypothesis, $p=h/\lambda$ for both the electron and the photon.

• A. Statement -1 is true, statement-2 is true and statement is correct explanation for statement-1.
• B. Statement -1 is true, statement-2 is true and statement is NOT correct explanation for statement-1.
• C. Statement -1 is true, statement-2 is false
• D. Statement -1 is false, statement-2 is true

Answer 1

The correct option is A Statement -1 is true, statement-2 is true and statement is correct explanation for statement-1.

KE of the photon (which is also the total energy of the photon) is greater than the kinetic energy of the electron, both having the same wavelength. It then gives the expression p = h / λ.