Surface Tension

Surface Tension

Surface tension is the property of liquid surface due to which it behaves like a stretched membrane.

### Formula

$$T=\frac{F}{l}$$

### For Soap Film

$$T=\frac{F}{2l}$$

### Terminologies

- T → Surface tension.

- F → Force.

- l → Length of liquid surface.

### SI Unit

$$Nm^{-1}$$

### Dimensions

$$[T]=[MT^{-2}]$$

### Conditions / Special Cases

Surface tension decreases with increase in temperature.

### Usage

- Used in capillary and liquid surface problems.