Question

According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal versus the frequency, of the incident radiation gives a straight line whose slope –

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

Answer 1

Answer: (A)

Is the same for all metals and independent of the intensity of the radiation

Answer 2

K.E._max = hν – W

Y = mX – C

* Slope ⇒ m = tan θ = h = constant

* Intercept ⇒ C = W