Question

When the light of frequency 2v_o (where v_o is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v₁. When the frequency of the incident radiation is increased to 5v_o, the maximum velocity of electrons emitted from the same plate is v₂. The ratio of v₁ to v₂ is

(a) 1:2

(b) 1:4

(c) 4:1

(d) 2:1

Answer 1

The correct option is (a) 1:2.

Explanation:

According to the Einstein's photoelectric equation