| Van der Wall's force: | General term for weak attractive intermolecular forces |
| Vector Quantity: | A quantity, which needs both magnitude and direction to describe it. |
| Velocity: | Distance traveled by a body in a particular direction per unit time or the displacement of the body per unit time. It is a vector quantity. |
| Vibration: | A back and forth motion that repeats itself. |
| Virtual image: | An image formed when the reflected or refracted light rays appear to meet; this image cannot be projected on a screen. |
| Volt: | Unit of potential difference, equivalent to joule/coulomb. |
| Voltage drop: | The electric potential difference across a resistor or other part of a circuit that consumes power. |
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