# Meaning of Physical Symbols for IAS

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Quantity | Symbol | SI unit | Symbol for SI Unit | Non-SI unit used |

Absorbed dose | Gray | |||

Acceleration | Metre per second squared | |||

Acc. due to gravity | Metre per second squared | |||

Activity | Becquerel | |||

Amount of substance | Mole | |||

Amplitude | Metre | |||

Angle | Radian | |||

Angular velocity | Radian per second | |||

Area | Metre squared | |||

Atomic number | ||||

Capacitance | Farad | |||

concentration | Mole per liter | |||

Critical angle | ||||

density | Kilogram per meter cubed | |||

Displacement | Meter | |||

Dose equivalent | Sievert | |||

Electric current | Ampere | |||

Electric field strength | Volt per metre | |||

Electronic charge | Coulomb | |||

Energy (electrical) | Joule | |||

Energy (heat) | Joule | |||

Energy (kinetic) | Joule | |||

Energy (potential) | Joule | |||

Energy (food) | Joule | |||

Enthalpy | Joule | |||

Focal length | Meter | |||

Frequency | Hertz | |||

half- life | Second | |||

Length (distance) | Metre | |||

Magnetic flux | Weber | |||

Magnetic flux density | Tesla | |||

Magnification | ||||

Mass | Kilogram | |||

Mass number | ||||

Molarity | Mole per liter | |||

Moment of a force | Newton metre | |||

Moment of inertia | Kilogram metre squared | |||

Momentum | Kilogram metre per second | |||

Permittivity | ε | Farad per metre | ||

Periodic time | Second | |||

Power | Watt | |||

Refractive index | ||||

Resistance | ohm | |||

Resistivity | ohm meter | |||

Speed | Meter per second | |||

Sound intensity | Watt per meter squared | |||

Sound intensity level | ||||

Specific heat capacity | Joule per kilogram per kelvin | |||

Strain | ||||

Stress | Newton per meter squared | |||

Temperature | Kelvin | |||

Temperature | Newton | |||

Change in temperature | Kelvin | |||

Tension | Newton | |||

Thermal conductivity | Watt per meter per kelvin | |||

Time | Second | |||

Torque | Newton metre | |||

Velocity | Metre per second | |||

Voltage potential difference | Volt | |||

U-value | Watt per meter squared per kelvin | |||

Volume | Metre cubed | |||

Wavelength | Meter | |||

Weight | Newton | |||

Work | Joule | |||

Young՚s modulus | Newton per metre squared |