A) \[2.0\]
B) \[2.5\]
C) \[1.6\]
D) \[1.5\]
Correct Answer: D
Solution :
Let real depth of the bubble from one side is u. Then from formula, \[\mu =\frac{Real\text{ }depth}{Appearent\text{ }depth}\] From other side of the cube: \[\mu =\frac{u}{6}\] ?.(i) From other side of the cube: \[\mu =\frac{15-u}{4}\] ?.(ii) \[\therefore \] From equations (i) and (ii) we get, \[\mu =\frac{u}{6}=\frac{15-u}{4}\Rightarrow u=9cm\] Therefore, \[\mu =\frac{u}{6}=\frac{9}{6}=1.5\]You need to login to perform this action.
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