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Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceOtherMediumConceptual

JEE Main 4 April 2026, Shift 2, Physics Q43

Question 43 of 75 in this shift, Physics question 18 of 25, Section A.

In Rutherford's alpha-particle scattering experiment, only a few alpha particles rebound back because A. The size of gold nucleus is very small as compared to the size of gold atom. B. Alpha particle and gold nucleus have equal charge. C. The impact parameter is minimum for a few alpha particles. D. A few alpha particles have very high kinetic energy. E. Only a few alpha particles undergo head-on collision with the nuclei. Choose the correct answer from the options given below:
  1. (1)A, B Only
  2. (2)B, E Only
  3. (3)C, D Only
  4. (4)A, C, E OnlyOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Atoms
Topic
Coulomb's Law
Idea tested
Coulomb Force in Rutherford Scattering

Same idea in other shifts

Asked 2× in all
  1. 29 Jun 2022, Shift 1 · Q57d1\sqrt{d_1} and d2\sqrt{d_2} are the impact parameters corresponding to scattering angles 60∘60^\circ and 90∘90^\circ respectively, when an…MediumNumerical value

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.