A closed rectangular tank is completely filled with water and is accelerated horizontally with an acceleration a towards right. Pressure is (i) maximum at, and (ii) minimum at
1. (i) B (ii) D
2. (i) C (ii) D
3. (i) B (ii) C
4. (i) B (ii) A
A beaker containing a liquid is kept inside a big closed jar. If the air inside the jar is continuously pumped out, the pressure in the liquid near the bottom of the beaker will
1. Increase
2. Decrease
3. Remain constant
4. First decrease and then increase
A vertical \(\mathrm{U}\)-tube of uniform inner cross-section contains mercury in both its arms. A glycerin (density\(=1.3\) g/cm3) column of length \(10\) cm is introduced into one of its arms. Oil of density \(0.8\) g/cm3 is poured into the other arm until the upper surfaces of the oil and glycerin are at the same horizontal level. The length of the oil column is:
(density of mercury \(=13.6\) g/cm3)
1. \(10.4\) cm
2. \(8.2\) cm
3. \(7.2\) cm
4. \(9.6\) cm
A triangular lamina of area A and height h is immersed in a liquid of density in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is:
1.
2.
3.
4.
If two liquids of same masses but densities and respectively are mixed, then density of mixture is given by
1.
2.
3.
4.
The density of water of bulk modulus B at a depth y in the ocean is related to the density at surface by the relation
1.
2.
3.
4.
With rise in temperature, density of a given body changes according to one of the following relations
(a) (b)
(c) (d)
For the figures given below, the correct observation is:
1. | pressure at the bottom of the tank (a) is greater than at the bottom of the tank (b). |
2. | pressure at the bottom of the tank (a) is lesser than at the bottom of (b). |
3. | pressure depends upon the shape of the container. |
4. | pressure at the bottom of (a) and (b) are the same. |
A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity then
1. Water levels in both sections A and B go up
2. Water level in Section A goes up and that in B comes down
3. Water level in Section A comes down and that in B it goes up
4. Water levels remains same in both sections
An iceberg of density \(900 ~\text{kg/m}^ 3\) is floating in the water of density \(1000 ~\text{kg/m}^ 3.\) The percentage of the volume of ice cube outside the water is:
1. \(20\% \)
2. \(35\% \)
3. \(10\% \)
4. \(25\% \)