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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceDiagram basedEasyData or graph

JEE Main 1 February 2024, Shift 1, Chemistry Q61

Question 61 of 90 in this shift, Chemistry question 1 of 30, Section A.

According to the wave-particle duality of matter by de-Broglie, which of the following graph plot presents most appropriate relationship between wavelength of electron(λ\lambda) and momentum of electron (p) ?

The figure, in words

Four graphs relating de-Broglie wavelength and momentum, as described in the options.
  1. (1)[figure: graph of λ\lambda (y-axis) vs p (x-axis), decreasing hyperbola-like curve]Official answer
  2. (2)[figure: graph of λ\lambda (y-axis) vs p (x-axis), straight line through origin]
  3. (3)[figure: graph of λ\lambda (y-axis) vs 1/p (x-axis), decreasing hyperbola-like curve]
  4. (4)[figure: graph of p (y-axis) vs λ\lambda (x-axis), straight line through origin]

Official answer

Option 1

NTA final key.

Chapter
Structure of Atom
Topic
Matter Waves
Idea tested
Graphical Variation of Wavelength vs Momentum

Same topic in other shifts

All Matter Waves questions
  1. 4 Apr 2026, Shift 2 · Q44The de Broglie wavelength associated with an electron accelerated through a potential difference V is λe\lambda_e and the de Broglie…EasySingle correct
  2. 5 Apr 2026, Shift 1 · Q35An electron of mass mm is moving in an electric field E⃗=−2E0i^\vec{E} = -2E_0\hat{i} (E0E_0 = constant >0> 0), with an initial velocity…MediumSingle correct
  3. 5 Apr 2026, Shift 2 · Q43An electron is travelling with a velocity vv in free space and when it enters a medium, its velocity is reduced by 20%. The de Broglie…EasySingle correct
  4. 6 Apr 2026, Shift 2 · Q47The de Broglie wavelength for an electron accelerated through the potential difference of V1V_1 volt is λ1\lambda_1. When the potential…EasyNumerical value
  5. 2 Apr 2025, Shift 2 · Q33An electron with mass mm with an initial velocity (t=0)(t=0) v⃗=v0i^\vec{v} = v_0\hat{i} (v0>0)(v_0 > 0) enters a magnetic field…MediumSingle correct
  6. 7 Apr 2025, Shift 2 · Q43A photoemissive substance is illuminated with a radiation of wavelength λi\lambda_i so that it releases electrons with de-Broglie…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. 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.