JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 8 April 2023, Shift 1, Physics Q44

Question 44 of 90 in this shift, Physics question 14 of 30, Section A.

Proton (P) and electron (e) will have same de-Broglie wavelength when the ratio of their momentum is (assume,

\mathrm{m_p} = 1849\ \mathrm{m_e}

(1) $1:1849$
(2) $1:43$
(3) $43:1$
(4) $1:1$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Dual Nature of Radiation and Matter
Topic: Matter Waves
Idea tested: Basic Wavelength-Momentum Relation

Same idea in other shifts

Asked 5× in all

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.