A) \[\frac{x\,\pi \,{{R}^{2}}\,{{n}_{1}}}{{{n}_{2}}}\]
B) \[\frac{x\,\pi \,{{R}^{2}}\,{{n}_{2}}}{{{n}_{1}}}\]
C) \[\frac{2\pi \,\,R\,{{n}_{1}}}{{{n}_{2}}}\]
D) \[\pi {{R}^{2}}x\]
Correct Answer: B
Solution :
Let actual height of water of the tank be h, then \[_{1}{{n}_{2}}=\frac{actual\,\,depth}{apparent\,\,depth}\] Also \[_{1}{{n}_{2}}=\frac{{{n}_{2}}}{{{n}_{1}}}\] \[\therefore \,\,\,\,\,\frac{{{n}_{2}}}{{{n}_{1}}}=\frac{h}{x}\] where x is an apparent depth.You need to login to perform this action.
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