Equal mass of three liquids are kept in three identical cylindrical vessels \(A\)\(B\) and \(C\). The densities are \(\rho_A,~\rho_B,~\rho_C\) with \(\rho_A<\rho_B<\rho_C\) . The force on the base will be:

1. maximum in vessel \(A\)
2. maximum in vessel \(B\)
3. maximum in vessel \(C\)
4. equal in all the vessels

Subtopic:  Pressure |
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A tank full of water is placed in an elevator. The elevator accelerates upward. The water pressure at the bottom of the tank:
1. decreases
2. increases
3. remains unchanged
4. first increases and then decreases
Subtopic:  Pressure |
 77%
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Two copper vessels \(A\) and \(B\) have the same base area but are of different shapes. \(A\) takes twice the volume of water that \(B\) requires to fill up to a particular common height. Then the correct statement among the following is:
1. pressure on the base area of vessels \(A\) and \(B\) is same.
2. pressure on the base area of vessels \(A\) and \(B\) is not same.
3. both vessels \(A\) and \(B\) weigh the same.
4. vessel \(B\) weighs twice that of \(A\).
Subtopic:  Pressure |
 69%
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Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density \(984~\text{kg/m}^3.\) The height of the wine column for normal atmospheric pressure is:
1. \(11.5~\text{m}\)
2. \(10.5~\text{m}\)
3. \(9.00~\text{m}\)
4. \(15.0~\text{m}\)

Subtopic:  Pressure |
 71%
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A hydraulic automobile lift is designed to lift cars with a maximum mass of \(3000\) kg. The area of the cross-section of the piston carrying the load is \(425\) cm2. What maximum pressure would the smaller piston have to bear?
1. \(3.12\times10^{5}\) Pa
2. \(1.01\times10^{5}\) Pa
3. \(2.94\times10^{5}\) Pa
4. 
\(6.92\times10^{5}\) Pa

Subtopic:  Pressure |
 79%
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Given below are two statements: 
Statement I: The pressure at the bottom of a vessel containing water is proportional to the height of the water.
Statement II: When water begins to flow out of a small hole in a tank (after the hole is opened), the pressure of water inside the tank near the hole decreases.
 
1. Statement I is incorrect and Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct and Statement II is incorrect.
Subtopic:  Pressure |
 70%
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