When the light of frequency $2{\nu }_0$ (where ${\nu }_0$ is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is $v_1$. When the frequency of the incident radiation is increased to $5{\nu }_0,$ the maximum velocity of electrons emitted from the same plate is $v_2.$ The ratio of $v_1 to v_2$ is

• A

  4 : 1
• B

  1 : 4
• Correct answer
  C

  1 : 2
• D

  2 : 1

Hence, the correct answer is option: 'C'.