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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceTwo statementsMediumData or graph

JEE Main 5 April 2024, Shift 1, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

Given below are two statements : Statement I : Figure shows the variation of stopping potential with frequency (ν\nu) for the two photosensitive materials M1M_1 and M2M_2. The slope gives value of he\frac{h}{e}, where h is Planck's constant, e is the charge of electron. Statement II : M2M_2 will emit photoelectrons of greater kinetic energy for the incident radiation having same frequency. In the light of the above statements, choose the most appropriate answer from the options given below.

The figure, in words

Graph of stopping potential V0V_0 (vertical axis) versus frequency ν\nu (horizontal axis): two parallel straight lines labelled M1M_1 and M2M_2 with positive slope; M1M_1 cuts the ν\nu-axis at a lower frequency than M2M_2.
  1. (1)Both Statement I and Statement II are correct
  2. (2)Both Statement I and Statement II are incorrect
  3. (3)Statement I is correct and Statement II is incorrectOfficial answer
  4. (4)Statement I is incorrect but Statement II is correct

Official answer

Option 3

NTA final key.

Chapter
Dual Nature of Radiation and Matter
Topic
Photoelectric Effect
Idea tested
Comparative Graphs for Different Metals

Same idea in other shifts

Asked 2× in all
  1. 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

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.