Question

Which level of the liquid should be considered for taking the reading of volume in the following images?

Answer 1

Image A: In this image, the meniscus of the liquid is concave, so we have to measure the lower level.
Image B: In this image, the meniscus of the liquid is concave, so we have to measure the upper level.
Image C: In this case, there is no curve in the meniscus of the liquid so we can measure the only level which is there.