Question

Two photons of energies twice and thrice the work function of a.metal are incident On the metal surface. Then the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively is

• A. $\sqrt{2};1$
• B. $\sqrt{3};1$
• C. $\sqrt{3};\sqrt{2}$
• D. $1;\sqrt{2}$

Answer 1

Answer: (D)

$1;\sqrt{2}$

Answer 2

$\frac{V_1}{V_2} = \sqrt{\frac{E_1 - \omega_0}{E_2 - \omega_0}}$