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1. Question marks are mentioned with each Question.
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1
The deeper we swim, the _____________________ the pressure.
Lesser
Greater
Smaller
None of these.
2
The ultimate cause of the vertical air movements is the pressure differences caused due to _________________ distribution of the heat of the sun.
Equal
Unequal
Both (a) and (b) are correct.
3
The lesser the area of contact of a given body, the _______________ is the pressure exerted by it.
Less
More
4
Why is manometer used ?
To measure liquid pressure.
To measure temperature.
To measure length.
5
The _____________ the area of contact of a given body, the more is the pressure exerted by it.
6
The depth of liquid increases, the weight of liquid column pushing down from above increases, and the pressure _________________________.
Increases.
Decreases
Reduces
7
The pressure due to a liquid depends upon its ________________.
Force
Area
Density
8
Railway tracks are laid on cement or iron sleepers. so that the pressure exerted by train could spread over the larger area and thus pressure _____________________.
Increases
Remains same
9
Which of the following instrument used to measure atmospheric pressure ?
Lactometer
Hygrometer
Barometer
10
Which of the following are correct :
(a) Atmospheric pressure is defined as the pressure exerted on an object by the weight of the air above it.
(b) The atmospheric pressure on the Earth's surface at sea level is about one hundred thousand pascal, i.e., 100 kPa.
Only (a) is correct.
Only (b) is correct.
11
(a) S.I. unit of thrust is newton (N).
(b) S.I. unit of thrust is Joule(J).
12
(a) The greater the height, the greater the pressure.
(b) The greater the height, the smaller the pressure.
13
(a) A manometer is a simple device used to measure liquid pressure.
(b) A manometer is a simple device used to measure temperature.
14
(a) The SI unit of pressure is Pascal (Pa).
(b) Increasing the area over which a particular force acts decreases the pressure produced.
(c) Increasing the area over which a particular force acts increases the pressure produced.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
All of these.
15
(a) Submarines are built of hard thick sheets of metal to withstand the high pressure under water.
(b) Submarines are built of hard thin sheets of metal to withstand the high pressure under water.
(c) Submarines are built of hard thin sheets of metal to withstand the low pressure under water.