Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

Radiation of frequency $2 v_0$ is incident on a metal with threshold frequency $v_0$. The correct statement of the following is _________.

Fill in the blank with the correct answer from the options given below.

Options:

No photoelectrons will be emitted

All photoelectrons emitted will have kinetic energy equal to $h v_0$

Maximum kinetic energy of photoelectrons emitted can be $h v_0$

Maximum kinetic energy of photoelectrons emitted will be $2 h v_0$

Correct Answer:

Maximum kinetic energy of photoelectrons emitted can be $h v_0$

Explanation:

$ K.E_{max} = h\nu - \phi = 2h\nu_0 - h\nu_0 = h\nu_0$

The correct answer is Option (3) → Maximum kinetic energy of photoelectrons emitted can be $h v_0$