If threshold energy is x J and energy of incident photon is y J then k

1.	If threshold energy is x J and energy of incident photon is y J then kinetic energy of ejected electron is
Answer» Answer: given : ENERGY of incident photon (hf) = y (J) and THRESHOLD energy( ϕ ) = X (J) As we KNOW that KE = hf – ϕ = y - x. (J)

If threshold energy is x J and energy of incident photon is y J then kinetic energy of ejected electron is

Answer»

Answer:

given :

ENERGY of incident photon (hf) = y (J)

and THRESHOLD energy( ϕ ) = X (J)

As we KNOW that

KE = hf – ϕ

= y - x. (J)