1. Bar is a Unit of:
(1) Atmospheric pressure (2) Water pressure
2. A litre of air at ground level has weight of about:(1) 1.75 gm (2) 1.3 gm
(3) 1.45 gm (4) 1.5 gm
3. Force acting on a unit area is called:
(1) Buoyant force (2) Immersion force
(3) Pressure (4) None of the above
4. When the depth in a liquid increases, the pressure:
(1) Decreases (2) Increases
(3) Remains constant
(4) First decrease than increases
5. Mountaineers suffers from nose bleeding due to:
(1) high atmospheric pressure and low blood pressure of body
(2) Low atmospheric pressure and high blood pressure of body
(3) High atmospheric pressure and high blood pressure of body
(4) Low atmospheric pressure and low blood pressure of body
6. Atmospheric pressure exerted on all objects at sea level is about:
(1) 1.8 kg/sq. cm (2) 1.7 kg/sq. cm
(3) 1 kg/sq. cm (4) 2 kg/sq. cm
7. At sea level the height of the mercury column in barometer will be:
(1) 76 cm (2) 86 cm
(3) 92 cm (4) 74 cm
8. The buoyant force of an immersed object is equal to:
(1) The volume of the object
(2) Mass of the object
(3) The weight of the liquid displayed by the object
(4) All the above
9. A iron slab is partially immersed in a liquid with the help of thread. The buoyant force exerted by the liquid on this object brings a decrease in its weight which is equal to the:
(1) Mass of the liquid displayed by the object
(2) Weight of the liquid displayed by the object
(3) Weight of the liquid immersed in the liquid
(4) Mass of the object immersed in the liquid
10. Where is the pressure of the Sea-water greater?
(1) 10 m below surface
(2) 20 m below surface
(3) 30 m below surface
(4) 40 m below surface
Answers:
1 | 1 |
2 | 2 |
3 | 3 |
4 | 2 |
5 | 2 |
6 | 3 |
7 | 1 |
8 | 3 |
9 | 2 |
10 | 4 |
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