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Friday, 9 October

NEET UG 2019 · Physics · Question 20

NEET 2019 Physics, question 20

Question 20 of the NEET 2019 paper (code P1) is a Physics question from Thermal Properties of Matter. Its idea, Thermal Conductivity, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.

Updated 2026-10-08

Q20 · Physics

The unit of thermal conductivity is :

  1. 1J m K−1J\ m\ K^{-1}
  2. 2J m−1 K−1J\ m^{-1}\ K^{-1}
  3. 3W m K−1W\ m\ K^{-1}
  4. 4W m−1 K−1W\ m^{-1}\ K^{-1}Official answer

Official answer: option 4 · NTA final answer key

Same idea

The only question on Thermal Conductivity

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

Thermal Conductivity: 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