NEET UG 2021 · Physics · Question 8
NEET 2021 Physics, question 8
Question 8 of the NEET 2021 paper (code O1) is a Physics question from Thermal Properties of Matter. Its idea, Radiation Correction in Calorimetry, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q8 · Physics
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is :
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- 4Official answer
Official answer: option 4 · NTA final answer key
Same idea
The only question on Radiation Correction in Calorimetry
No other NEET paper from 2017–2026 tested this exact idea.
Radiation Correction in Calorimetry: 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. Calorimetry alone had 2.