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JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 28 June 2022, Shift 1, Physics Q45

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

The Q-value of a nuclear reaction and kinetic energy of the projectile particle,

\mathrm{K_p}

are related as :

(1) $\mathrm{Q = K_p}$
(2) $(\mathrm{K_p} + \mathrm{Q}) < 0$
(3) $\mathrm{Q < K_p}$
(4) $(\mathrm{K_p} + \mathrm{Q}) > 0$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Nuclei
Topic: Nuclear Binding Energy
Idea tested: Q-Value and Reaction Spontaneity

Same idea in other shifts

Asked 2× in all

6 Sep 2020, Shift 2 · Q18Given the masses of various atomic particles $m_p=1.0072$ u, $m_n=1.0087$ u, $m_e=0.000548$ u, $m_{\bar\nu}=0$ , $m_d=2.0141$ u, where…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 108 of the 174 JEE Main shifts held from 2017 to 2026.