Q. No.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 |
1. decreases
2. increases
3. remains unchanged
4. first increases and then decreases
| 1. | pressure on the base area of vessels \(A\) and \(B\) is the same. |
| 2. | pressure on the base area of vessels \(A\) and \(B\) is not the same. |
| 3. | both vessels \(A\) and \(B\) weigh the same. |
| 4. | vessel \(B\) weighs twice that of \(A\). |
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. \(15.0~\text{m}\)
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
1. \(g\)
2. \(\dfrac{g}{3}\)
3. \(2g\)
4. \(3g\)
A wooden block with a coin placed on its top, floats in water as shown in the figure.
The distances \(l\) and \(h\) are shown in the figure. After some time, the coin falls
into the water. Then,
| (a) | \(l\) decreases |
| (b) | \(h\) decreases |
| (c) | \(l\) increases |
| (d) | \(h \) increases |
Choose the correct alterative/s:
| 1. | (b), (c) |
| 2. | (a), (d) |
| 3. | (c), (d) |
| 4. | (a), (b) |
| 1. | \([2+(n+1)r ]\rho\) | 2. | \([2+(n-1)r] \rho\) |
| 3. | \([1+(n-1)r] \rho\) | 4. | \([1+(n+1)r ]\rho\) |
Streamline flow is more likely for liquids with
| (a) | high density. | (b) | high viscosity. |
| (c) | low density. | (d) | low viscosity. |
Choose the correct option:
| 1. | (a), (b) | 2. | (c), (d) |
| 3. | (b), (c) | 4. | (a), (d) |
© 2025 GoodEd Technologies Pvt. Ltd.