Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

The frequency of incident light falling on a photo sensitive plate is doubled, then maximum kinetic energy of the emitted photoelectrons will become –

Options:

2 times of the earlier value

More than 2 times of the earlier value

Less than 2 times of the earlier value

Unchanged

Correct Answer:

More than 2 times of the earlier value

Explanation:

$KE_{max}=h(v-v_0)$

$\frac{KE_{max}}{KE_{max}}=\frac{h(2v-v_0)}{h(v-v_0)}>2$