Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Photoelectric Effect and Wave–Particle Duality
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Photoelectric Effect and Wave–Particle Duality
In a photoelectric effect experiment, the photocurrent increases if
In a photoelectric effect experiment, the photocurrent increases if
Options
- Athe intensity of the source is increased
- Bthe exposure time is decreased
- Cthe exposure time is increased
- Dthe intensity of the source is decreased
Correct answer
A. the intensity of the source is increased
Step-by-step solution
ional to the intensity of the incident light, assuming the frequency of the incident light is greater than the threshold frequency.
The intensity of light represents the number of photons incident per unit area per unit time.
When the intensity of the source is increased, more photons strike the metal surface per second. This results in the emission of a greater number of photoelectrons per second, thereby increasing the photocurrent.
Photocurrent is a measure of the rate of emission of electrons and is independent of the exposure time.
The intensity of light represents the number of photons incident per unit area per unit time.
When the intensity of the source is increased, more photons strike the metal surface per second. This results in the emission of a greater number of photoelectrons per second, thereby increasing the photocurrent.
Photocurrent is a measure of the rate of emission of electrons and is independent of the exposure time.