WBCS.LIVE practice question

Consider the following statements regarding the Photoelectric Effect: 1. The stopping potential depends directly on the frequency of the incident light. 2. The saturation photoelectric current depends directly on the intensity of the incident light. Which of the statements given above is/are correct?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Only 1
  2. Only 2
  3. Both 1 and 2
  4. Neither 1 nor 2

Correct answer and explanation

Correct answer: Both 1 and 2

Explanation: āœ… Correct Answer: C) Both 1 and 2 šŸ“š Explanation: Both statements are factually correct. According to Einstein's photoelectric theory, the maximum kinetic energy (and thus the stopping potential) of the emitted electrons depends strictly on the frequency of the incoming light, not its intensity. Conversely, the total number of electrons emitted per second (saturation current) depends purely on the intensity (brightness) of the light.