Question

According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photoelectrons from a metal Vs the frequency, of the incident radiation gives a straight line whose slope:

• A. Depends on the nature of the metal used
• B. Depends on the intensity of the radiation
• C. Depends both on the intensity of the radiation and the metal used
• D. Is the same for all metals and independent of the intensity of the radiation

Answer 1

The correct option is D Is the same for all metals and independent of the intensity of the radiation

According to Einstein's photoelectric equation,

$h\nu =W_0+KE$

$⟹KE=h\nu -W_0$

Comparing with $y=mx+c$

Slope$=m=h$

which is Plank's constant, same for all metals and independent of intensity of radiation.