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Question

A water tank placed on the floor has two small holes, pinched in the vertical wall, one above the other. The holes are 3.3cm and 4.7cm above the floor. If the jets of water issuing out from the holes hit the floor at the same point on the floor, then the height of water in the tank is

A
3cm
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B
6cm
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C
8cm
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D
9cm
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Solution

The correct option is C 8cm
Since Range = 2(Hh)h
Given h1=3.3&h2=4.4
and R1=R2
2(Hh1)h1=2(Hh2)h2
(Hh1)h1=(Hh2)h2
(H3.3)3.34.7=H4.7
0.702H - 2.317 = H - 4.7
0.297H = 2.3829
H=8cm

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