🔍 Introduction
In Physics and Thermodynamics, students often confuse Heat and Temperature. Though related, they are not the same. Understanding this difference is crucial for board exams, competitive exams, and teaching eligibility tests like TGT, PGT, and NET.
At SR Study, under the expert guidance of Suraj Sir (Suraj Tiwari)—known as one of the best teachers for TGT & PGT Physics—students gain clarity with practical explanations.
🔥 What is Heat?
Heat is a form of energy in transit, moving from a hot body to a cold body due to temperature difference.
- Heat flows spontaneously until equilibrium.
- It is not stored, only measurable during transfer.
Units of Heat: Joule (J), Calorie (Cal)
Measured By: Calorimeter
Property: Path function, Extensive quantity
👉 Example: 1 liter of boiling water has more heat than 200 ml, even at the same temperature.
🌡️ What is Temperature?
Temperature is a measure of the thermal state of a system. It indicates the average kinetic energy of molecules.
- Defines how hot or cold a body is.
- Determines the direction of heat flow.
Units of Temperature: Kelvin (K), Celsius (°C), Fahrenheit (°F)
Measured By: Thermometer
Property: Point function, Intensive quantity
👉 Example: A swimming pool and a cup of tea may both be at 30°C, but their total heat energy differs.
🔑 Key Differences Between Heat and Temperature
| Aspect | Heat | Temperature |
| Definition | Energy transferred due to temperature difference. | Measure of average kinetic energy of particles. |
| Nature | Energy in transit. | Property of system. |
| Unit | Joule (J). | Kelvin (K). |
| Instrument | Calorimeter. | Thermometer. |
| Derived/Fundamental | Derived. | Fundamental. |
| Function | Path function. | Point function. |
| Property | Extensive (depends on mass). | Intensive (independent of mass). |
| Flow | Flows from hot to cold body. | Does not flow. |
✅ Similarities Between Heat and Temperature
- Both are scalar.
- Both can be measured.
- Both are interconnected – heat transfer changes temperature.
💡 Suraj Sir adds: Even without direct heat transfer, temperature can rise (e.g., gas compression).
🌍 Real-Life Examples
- Tea vs Pool: Same temperature (30°C), but pool holds more heat.
- Melting Ice: Heat flows from water to ice until equilibrium.
- Cooking: Flame transfere heat; pot’s temperature rises.
📘 Importance for Students (TGT & PGT Physics)
- Forms foundation of Thermodynamics.
- Key for Physics, TGT, PGT, NET, and even JEE/NEET basics.
- At SR Study, students learn these concepts in an exam-oriented and practical way with Suraj Sir.
👨🏫 Why Learn From Suraj Sir (Suraj Tiwari)?
Suraj Sir’s Teaching Strengths:
- Deep subject expertise + clear basics
- Exam-focused teaching (TGT, PGT, NET)
- Real-life analogies, diagrams, easy explanations
- Proven results in competitive exams
📢 Student feedback: “Physics becomes easy and logical when explained by Suraj Sir.”
🎯 Conclusion
- Heat = Energy in transit (path function, extensive).
- Temperature = Thermal state measure (point function, intensive).
- Both concepts are linked but fundamentally different.
At SR Study, with Suraj Sir’s guidance, Physics concepts become simpler, practical, and exam-ready.
Chandra Classes A best Coaching For Teaching Exams Like TGT / PGT / GIC / LT
✨ SR Study – Learn Physics smarter and better with Suraj Tiwari Sir, the best teacher for TGT & PGT Physics.