Question

Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface.Find out the ratio of maximum velocity of photo electrons emitted in the two cases.

• A. $\frac{v_1}{v_2}=\frac{1}{3}$
• B. $\frac{v_1}{v_2} = \frac{1}{4}$
• C. (\frac{v_1}{v_2} = 1
• D. $\frac{v_1}{v_2} = \frac{1}{2}$

Answer 1

Answer: (D)

$\frac{v_1}{v_2} = \frac{1}{2}$

Answer 2

The correct option is (D): $\frac{v_1}{v_2} = \frac{1}{2}$