【Daily Question】Theoretical Foundation 2019.5.13
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Multiple-choice question: When one end of a capillary is inserted into water, the water level rises by 5 cm inside the capillary. If the capillary is moved downward, 3 cm of water remains at the surface. What is the behavior of the water at the upper end of the capillary? ( ) A. Water overflows from the upper end of the capillary. B. The water surface at the upper end forms a convex meniscus. C. The water surface at the upper end forms a concave meniscus. D. The water surface at the upper end is horizontal. Answer: C Hint: The answer can be seen in the response
C. The water surface at the upper end of the capillary forms a concave meniscus
C. The water surface at the upper end of the capillary forms a concave meniscus
C. The water surface at the upper end of the capillary forms a concave meniscus
C. The water surface at the upper end of the capillary forms a concave meniscus