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Friday, 9 October

NEET UG 2026 · Physics · Question 24

NEET 2026 Physics, question 24

Question 24 of the NEET 2026 paper (re-exam) is a Physics question from Thermal Properties of Matter. Its idea, Area and Volume Expansion, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q24 · Physics

The temperature of a metallic sphere of radius R is increased by a small amount ΔT\Delta T. If the linear coefficient of thermal expansion of the metal is α\alpha, the approximate increase in the volume of the sphere is :

  1. 12πR3αΔT2\pi R^3\alpha\Delta T
  2. 23πR3αΔT3\pi R^3\alpha\Delta T
  3. 34πR3αΔT4\pi R^3\alpha\Delta TOfficial answer
  4. 46πR3αΔT6\pi R^3\alpha\Delta T

Official answer: option 3 · NTA final answer key

Same idea

The only question on Area and Volume Expansion

No other NEET paper from 2017–2026 tested this exact idea.

Area and Volume Expansion: every question and how it was framed

The chapter

Thermal Properties of Matter in ten years of NEET

10 questions from 2017–2026, asked in 8 of 10 papers, about 1.0 a paper. Heat Transfer and Thermal Expansion alone had 8.

Chapter analysisStudy this chapterPractise this chapter

Thermal Properties of Matter: questions per paper

0242’171’182’191’201’210’220’231’241’251’26