NEET UG 2026 · Physics · Question 45
NEET 2026 Physics, question 45
Question 45 of the NEET 2026 paper (re-exam) is a Physics question from Kinetic Theory. Its idea, Degrees of Freedom and Internal Energy, was asked 3 times, in 2017, 2021 and 2026, across NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q45 · Physics
An ideal gas is made of polyatomic molecules. Each of the molecules has three translational, three rotational and f number of vibrational modes. If the ratio of heat capacities of the gas is 8/7, then the value of f is :
- 14Official answer
- 23
- 32
- 41
Official answer: option 1 · NTA final answer key
Same idea
Degrees of Freedom and Internal Energy, in other papers
NEET asked this idea 3 times, in 2017, 2021 and 2026. The other 2 questions below.
- 2021 Q27Match Column - I and Column - II and choose the correct match from the given choices. Column - I | Column - II (A) Root mean square speed…Match the lists · Easy
- 2017 Q2A gas mixture consists of 2 moles of and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total…Numerical · Easy
Degrees of Freedom and Internal Energy: every question and how it was framed
The chapter
Kinetic Theory in ten years of NEET
14 questions from 2017–2026, asked in 10 of 10 papers, about 1.4 a paper. Kinetic Theory of Gases alone had 14.