JAMB Physics 2021 Objective — Question 15
Question 15 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2021 Objective paper, with the correct answer and a full explanation.
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When metallic surface illuminated by light of given frequency and intensity:
- A. number and energy depend on frequency
- B. number and energy depend on intensity
- C. number depends on intensity, energy depends on frequencyCorrect
- D. number depends on intensity, energy depends on intensity
Explanation
Number of photoelectrons ∝ intensity; KE depends on frequency.
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