NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Atomic Physics
NEET · Physics · Atomic Physics
Consider the following statements about the photoelectric effect:...
Consider the following statements about the photoelectric effect:
1. The photoelectric effect demonstrates the particle nature of light.
2. The kinetic energy of the emitted electrons is independent of the intensity of the incident light but depends on the frequency of the light.
3. There exists a threshold frequency below which no electrons are emitted, regardless of the intensity of the light.
4. The number of photoelectrons emitted increases with an increase in the frequency of the incident light.
Which of the above statements are correct?
Options
- A1, 2, and 3 only
- B1, 2, and 4 only
- C1, 3, and 4 only
- DAll of the above
Correct answer
A. 1, 2, and 3 only
Step-by-step solution
- Statement 1 is correct: The photoelectric effect supports the particle nature of light, as explained by Einstein using photons.
- Statement 2 is correct: The kinetic energy of the photoelectrons depends on the frequency of the incident light, not its intensity.
- Statement 3 is correct: Below a certain threshold frequency, no photoelectrons are emitted, regardless of the light's intensity.
- Statement 4 is incorrect: The number of photoelectrons emitted depends on the intensity of light, not its frequency. Frequency affects the energy of individual electrons.