Question
Two capillary tubes, P and Q, are dipped vertically in water. The height of the water level in capillary tube P is $ \frac{2}{3} $ of the height in capillary tube Q. The ratio of their diameters is --------
Two capillary tubes, P and Q, are dipped vertically in water. The height of the water level in capillary tube P is $ \frac{2}{3} $ of the height in capillary tube Q. The ratio of their diameters is --------