Question Detail

PHY 104 PHY 104 Past Questions Objective Question
Take CBT

Question

In the photoelectric effect, the speed of emitted electrons may be increased by
Options
A increasing the frequency of the light
Correct Answer
B decreasing the frequency of the light
C increasing the intensity of illumination
D decreasing the intensity of illumination
Correct Answer

Option A is the correct answer.

Detailed Explanation

The maximum kinetic energy (and thus speed) of photoelectrons is determined by the frequency of the incident light. Increasing the frequency increases the energy of the photons, which increases the kinetic energy of the emitted electrons.

Hint

Recall the photoelectric equation: K_max = hf - φ.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 759 of 947
Previous Course Details Next