Physics Thermodynamics BUMHS 2024
PMDC Verified Question 14 of 54
Which of the following condition must be true for transfer of energy from an object at temperature \(T_1\) to another object at temperature \(T_2\)?
A
\(T_1 < T_2\)
B
\(T_1 = T_2\)
C
None of these
D
\(T_1 > T_2\)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: \(T_1 > T_2\)
1. Concept:

The Second Law of Thermodynamics (Clausius statement) dictates the absolute natural direction of spontaneous heat flow.

2. Formula:

$$Q_{\text{spontaneous}} \to \text{from High } T \text{ to Low } T$$

3. Solution:

  • Heat energy inherently flows down a thermal gradient, much like water flowing downhill.


  • For heat to naturally transfer from Object 1 to Object 2, Object 1 MUST possess a higher average kinetic temperature than Object 2.


  • Therefore, the absolute required mathematical condition is \(T_1 > T_2\).


4. Why other options are incorrect:

If \(T_1 = T_2\), they are in thermal equilibrium and net heat transfer is exactly zero. If \(T_1 < T_2\), heat would naturally flow in the reverse direction (from 2 to 1).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Thermodynamics MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App