Calculate the capillary rise in mm in a glass tube of 6 mm diameter when immersed in (a) water, and (b) mercury, both liquids being at 20oC. Assume σ to be 73 × 10−3 N/m for water and 0.5 N/m for mercury. The contact angle for water and mercury are zero and 130o respectively.
- Glass tube of diameter D = 6 mm
When the glass tube is immersed in water :
When the glass tube is immersed in mercury :