The expression for capillary rise is given by when, $$\sigma$$ surface tension, $$\theta$$ -angle of contact and $$\rho$$ - density

A

$$h = \frac{2 \sigma \sin \theta}{\rho gd}$$

B

$$h = \frac{4 \sigma \cos \theta}{\rho gd}$$

C

$$h = \frac{2 \sigma \cos \theta}{\rho gd}$$

D

$$h = \frac{4 \sigma \sin \theta}{\rho gd}$$