A vessel of height h is half filled with one liquid of refractive index $\mu_1 $ and upper half filled with another liquid of refractive index $\mu_2$ The apparent depth of the vessel is

Question

$(a)\;\bigg( \frac{1}{\mu_1}+\frac{1}{\mu_2}\bigg) h \\ (b)\;2h \bigg( \frac{1}{\mu_1}+\frac{1}{\mu_2}\bigg) \\ (c)\;\frac{h}{2}\bigg( \frac{1}{\mu_1}+\frac{1}{\mu_2}\bigg) \\ (d)\;\frac{h}{\mu_1\mu_2} $