Ron fills a beaker with glycerin (n = 1.473) to a depth of 5.0 cm. if he looks straight down through the glycerin surface, he will perceive the liquid to be what apparent depth?

By law of refraction we know that image position and object positions are related to each other by following relation

here we know that

now by above formula

so apparent depth of the bottom is seen by the observer as h = 3.39 cm

gas and liquid