A) more than 40 feet
B) less than 35 feet
C) about 50.8 feet
D) none of the above
Correct Answer: B
Solution :
The water can be drawn from a well whose depth is equal to height of water column (= 76 cm of mercury column). \[\therefore \] \[h=h\rho \text{/}{{\rho }_{1}}\] \[=\frac{76\times 13.6}{1}\] \[=1033.6\,cm\] \[=\frac{1033.6}{2.54\times 12}ft\] \[=33.91\,ft\] Thus, depth of water level is less than 35 feet.
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