Physics Symbols List Latest 2025 - Summary
The Physics Symbols List is important for students and enthusiasts to know different physical quantities and their symbols used in textbooks and exams. This updated 2025 list makes it easy for you to identify symbols, whether they are letters, Greek characters, or other common notations in physics.
Understanding Physics Symbols
In physics, symbols stand for physical quantities and are very helpful for quick and clear communication. Some symbols are the first letters of the quantity they represent, like ‘m’ for mass or ‘t’ for time. Others are standard symbols, like ‘c’ for the speed of light, or Greek letters like ‘u03BB’ (lambda) for wavelength. Sometimes symbols have more than one meaning, but their meaning is usually clear from the context.
Complete Physics Symbols List for Class 12
| Physical Quantity | Symbol(s) | Symbol Name | Scalar/Vector | SI Unit |
|---|---|---|---|---|
| Mass | m | – | Scalar | Kilogram (Kg) |
| Time | t | – | Scalar | Seconds (s) |
| Distance, Length | l, d, r | – | Scalar | Meter (m) |
| Area | A | – | Scalar | m2 |
| Volume | V | – | Scalar | m3 |
| Density | D | – | Scalar | kg/m3 |
| Temperature | T | – | Scalar | Kelvin (K) |
| Frequency | f, v | – | Scalar | Hertz (Hz) |
| Heat | Q | – | Vector | Joule (J) |
| Specific Heat Capacity | c | – | Scalar | J kg−1 K−1 |
| Wavelength | u03BB | lambda | Scalar | Meter (m) |
| Angular Displacement | u03B8 | theta | Scalar | Radian (rad) |
| Speed of Light and Sound | c | – | Scalar | m/s |
| Angular Frequency | u03C9 | omega | Pseudovector | Radian per second (rad/s) |
| Velocity | v | – | Vector | m/s |
| Acceleration | a | – | Vector | Meter per second squared (m/s2) |
| Angular Acceleration | u03B1 | alpha | Vector | Radian per second squared (rad/s2) |
| Momentum | p | – | Vector | kgu00B7m/s |
| Period | T | – | Scalar | Second (s) |
| Force | F | – | Vector | Newton (N) |
| Torque | u03C4 | tau | Vector | Newton meter (Nu00B7m) |
| Power | P | – | Scalar | Watt (W) |
| Mechanical Work | W | – | Scalar | Joule (J) |
| Energy | E | – | Scalar | Joule (J) |
| Pressure | p | – | Scalar | Pascal (Pa) |
| Moment of Inertia | I | – | Scalar | kg m2 |
| Angular Momentum | L | – | Vector | kgu00B7m2s-1 |
| Friction | f | – | Vector | Newton (N) |
| Coefficient of Friction | u00B5 | mu | Scalar | Unitless |
| Kinetic Energy | K | – | Scalar | Joule (J) |
| Potential Energy | U | – | Scalar | Joule (J) |
| Charge | q, Q | – | Scalar | Coulomb (C) |
| Current | I | – | Scalar | Ampere (A) |
| Resistance | R | – | Scalar | Ohm (u03A9) |
| Inductance | L | – | Scalar | Henry (H) |
| Capacitance | C | – | Scalar | Farad (F) |
| Electric Potential Difference | V | – | Scalar | Volt (V) |
| Electric Field | E | – | Vector | Newton per Coulomb (N C-1) |
| Magnetic Field | B | – | Scalar | Tesla (T) |
You can download the Physics Symbols List PDF using the link given below.
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