A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is : (αCu = 1.7×10^-5 K^-1 and αAl = 2.2×10^-5 K^-1)

NEET UG 2019 · Physics · Question 14

NEET 2019 Physics, question 14

Question 14 of the NEET 2019 paper (code P1) is a Physics question from Thermal Properties of Matter. Its idea, Linear Thermal Expansion, was asked twice, in 2019 and 2024, across NEET 2017–2026. The NTA final answer key gives option 4.

Updated 2026-10-08

Q14 · Physics

(\alpha_{Cu} = 1.7\times10^{-5}\ K^{-1}

1 6.8 cm 2 113.9 cm 3 88 cm 4 68 cm Official answer

Official answer: option 4 · NTA final answer key

Same idea

Linear Thermal Expansion, in other papers

NEET asked this idea twice, in 2019 and 2024. The other question below.

0.5\times10^{11}

Linear Thermal 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 analysis Study this chapter Practise this chapter

Linear Thermal Expansion, in other papers

Thermal Properties of Matter in ten years of NEET

Thermal Properties of Matter: questions per paper