When electromagnetic radiation of wavelength 310 nm falls on the surface of a metal having work function 3.55 eV, the velocity of photoelectrons emitted is $x \times 10^5 \mathrm{~ms}^{-1}$. The value of $x$ is (Nearest integer) $\left(\mathrm{m}_{\mathrm{e}}=9 \times 10^{-31} \mathrm{~kg}\right)$

• A

  $2$
• Correct answer
  B

  $4$
• C

  $5$
• D

  $6$

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