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Friday, 9 October

JEE Main 2023 · PhysicsMultiple choiceOtherEasyConceptual

JEE Main 8 April 2023, Shift 2, Physics Q45

Question 45 of 90 in this shift, Physics question 15 of 30, Section A.

In photo electric effect A. The photocurrent is proportional to the intensity of the incident radiation. B. Maximum Kinetic energy with which photoelectrons are emitted depends on the intensity of incident light. C. Max. K.E with which photoelectrons are emitted depends on the frequency of incident light. D. The emission of photoelectrons require a minimum threshold intensity of incident radiation. E. Max. K.E of the photoelectrons is independent of the frequency of the incident light. Choose the correct answer from the options given below:
  1. (1)A and B only
  2. (2)B and C only
  3. (3)A and C onlyOfficial answer
  4. (4)A and E only

Official answer

Option 3

NTA final key.

Chapter
Dual Nature of Radiation and Matter
Topic
Photoelectric Effect
Idea tested
Intensity vs Frequency Effects

Same topic in other shifts

All Photoelectric Effect questions
  1. 2 Apr 2026, Shift 1 · Q42For a certain metal, when monochromatic light of wavelength λ\lambda is incident, the stopping potential for photoelectrons is 3Vo3V_o.…MediumSingle correct
  2. 4 Apr 2026, Shift 1 · Q32The graph shows variation of stopping potential VoV_o with the frequency ν\nu of the incident radiation for three photosensitive metals…MediumDiagram basedHas a figure
  3. 5 Apr 2026, Shift 1 · Q41Light source having wavelength 331 nm is used to generate photo-electrons whose stopping potential is 0.2 V. The work function of the used…EasySingle correct
  4. 8 Apr 2026, Shift 2 · Q38A monochromatic source of light operating at 15 kW emits 2.5×10222.5 \times 10^{22} photons/s. The region of an electromagnetic spectrum to…MediumSingle correct
  5. 8 Apr 2026, Shift 2 · Q43K1K_1 and K2K_2 be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength…MediumSingle correct
  6. 2 Apr 2025, Shift 1 · Q44A monochromatic light is incident on a metallic plate having work function ϕ\phi. An electron, emitted normally to the plate from a point…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.