Q31.Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface? JEE Main 2019 (10 Jan Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question tests the understanding of the fundamental principles of the photoelectric effect, specifically how kinetic energy and photocurrent depend on the frequency and intensity of incident light. It requires analyzing which graphical relationship among the options (not provided in text) is inconsistent with these principles.
Concepts Tested
Formulas Used
KE_max = hf - ฯ
Photocurrent โ Intensity (for f > f_threshold)
๐ NCERT Sections This Tests
11.8 โ Light Of Frequency 7.21 ร 1014 Hz Is Incident On A Metal Surface.
Physics Class 12 ยท Chapter 11
11.8 Light of frequency 7.21 ร 1014 Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 ร 105 m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?
11.3 โ The Photoelectric Cut-Off Voltage In A Certain Experiment Is 1.5 V.
Physics Class 12 ยท Chapter 11
11.3 The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
11.6 โ The Threshold Frequency For A Certain Metal Is 3.3 ร 1014 Hz. If Light
Physics Class 12 ยท Chapter 11
11.6 The threshold frequency for a certain metal is 3.3 ร 1014 Hz. If light of frequency 8.2 ร 1014 Hz is incident on the metal, predict the cut- off voltage for the photoelectric emission.
๐ Question Details
- Chapter
- Dual Nature of Matter
- Topic
- Photoelectric effect
- Year
- 2019
- Shift
- 10 Jan Shift 1
- Q Number
- Q31
- Type
- Graph based
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Matter