Final answer:
The ratio of the heights to which water and mercury are raised by capillary action in the same glass tube is 2:1.
Step-by-step explanation:
The ratio of the heights to which water and mercury are raised by capillary action in the same glass tube is 2:1. Capillary action occurs when a liquid is pulled upwards against the force of gravity due to the attraction between the liquid molecules and the surface of the tube.
The height to which a liquid is raised depends on factors such as the contact angle, surface tension, density of the liquid, and the radius of the tube.